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Research

The Ontario Bariatric Network has a strong commitment to evidence-based research to study obesity and bariatric treatment through high-impact studies. Research conducted by over 100 researchers and scientists across the OBN continues to play pivotal role in better understanding obesity, the risks and benefits of bariatric surgery, medical treatment of bariatric patients, and identifying practices and health service areas that require optimization and improvement. Research conducted has been used to inform decision makers and direct policy on the optimal treatment and management of severe obesity to achieve the goal of more efficient patient treatment.

The OBN Research Task Force meets monthly to discuss current studies and new research ideas. The goal of the task force is to create a research collaborative to facilitate multi-centre trials to better understand obesity and obesity treatment. If you have any questions or research ideas, please contact our OBN Research Task Force : kbarlow@stjoes.ca

Barber D, Morkem R, Dalgarno N, Houlden R, Smith K, Anvari M, Zevin B. Patients eligible and referred for bariatric surgery in southeastern Ontario: Retrospective cohort study. Can Fam Physician. 2021 Jan;67(1):e31-e40. doi: 10.46747/cfp.6701e31

Zevin B, Almakky M, Mancini U, Robertson DI. Digital approach to informed consent in bariatric surgery: a randomized controlled trial. Surg Endosc. 2021 Jan 27. doi: 10.1007/s00464-020-08277-x

Elnahas AI, Doumouras AG, Anvari M, Schlachta CM, McClure A, Alkhamesi NA, Hawel JD, Urbach DR. Access to bariatric surgery among older patients in a publicly funded regionalized care system. Surg Endosc. 2021 Jan 4. doi: 10.1007/s00464-020-08212-0

Tarride JE, Doumouras AG, Hong D, Paterson JM, Tibebu S, Perez R, Ma J, Taylor VH, Xie F, Boudreau V, Pullenayegum E, Urbach DR, Anvari M. Association of Roux-en-Y Gastric Bypass With Postoperative Health Care Use and Expenditures in Canada. JAMA Surg. 2020 Sep 1;155(9):e201985. doi: 10.1001/jamasurg.2020.1985

Doumouras AG, Albacete S, Mann A, Gmora S, Anvari M, Hong D. A Longitudinal Analysis of Wait Times for Bariatric Surgery in a Publicly Funded, Regionalized Bariatric Care System. Obes Surg. 2020 Mar;30(3):961-968. doi: 10.1007/s11695-019-04259-8

Doumouras AG, Lee Y, Babe G, Gmora S, Tarride JE, Hong D, Anvari M. The hidden cost of an extensive preoperative work-up: predictors of attrition after referral for bariatric surgery in a universal healthcare system. Surg Endosc. 2020 Feb;34(2):988-995. doi: 10.1007/s00464-019-06894-9

Hagen J, Klein L, Miller E, Solomon S. Leveraging Digital Infrastructure for Data Analysis: An Example in Bariatric Surgery. Healthc Q. 2020 May;23(SP):9-13. doi: 10.12927/hcq.2020.26177

Santiago VA, Warwick K, Ratnakumarasuriyar S, Oyewumi A, Robinson S, Sockalingam S. Evaluation of a Patient-Care Planning Intervention to Improve Appointment Attendance by Adults After Bariatric Surgery. Can J Diabetes. 2019 Feb;43(1):59-66. doi: 10.1016/j.jcjd.2018.05.003

Zhang JC, Tomlinson G, Wnuk S, Sockalingam S, Cram P. Disparities in Receipt of Bariatric Surgery in Canada: An Analysis of Data From an Ontario Bariatric Surgery Referral Center. Med Care. 2019 Sep;57(9):723-727. doi: 10.1097/MLR.0000000000001163

Doumouras AG, Saleh F, Hong D. The effect of distance on short-term outcomes in a regionalized, publicly funded bariatric surgery model. Surg Endosc. 2019 Apr;33(4):1167-1173. doi: 10.1007/s00464-018-6383-x

Prabhu KL, Okrainec A, Maeda A, Saskin R, Urbach D, Bell CM, Jackson TD. Utilization of Public System for Gastric Bands Placed by Private Providers: a 4-Year Population-Based Analysis in Ontario, Canada. Obes Surg. 2018 Sep;28(9):2979-2982. doi: 10.1007/s11695-018-3342-5

Doumouras AG, Anvari S, Breau R, Anvari M, Hong D, Gmora S. The effect of an online referral system on referrals to bariatric surgery. Surg Endosc. 2017 Dec;31(12):5127-5134. doi: 10.1007/s00464-017-5578-x

Doumouras AG, Saleh F, Sharma AM, Anvari S, Gmora S, Anvari M, Hong D. Geographic and socioeconomic factors affecting delivery of bariatric surgery across high- and low-utilization healthcare systems. Br J Surg. 2017 Jun;104(7):891-897. doi: 10.1002/bjs.10517

Doumouras AG, Saleh F, Anvari S, Gmora S, Anvari M, Hong D. A Longitudinal Analysis of Short-Term Costs and Outcomes in a Regionalized Center of Excellence Bariatric Care System. Obes Surg. 2017 Nov;27(11):2811-2817. doi: 10.1007/s11695-017-2707-5

Doumouras AG, Saleh F, Anvari S, Gmora S, Anvari M, Hong D. The effect of health system factors on outcomes and costs after bariatric surgery in a universal healthcare system: a national cohort study of bariatric surgery in Canada. Surg Endosc. 2017 Nov;31(11):4816-4823. doi: 10.1007/s00464-017-5559-0

Wharton S, Serodio KJ, Kuk JL, Sivapalan N, Craik A, Aarts MA. Interest, views and perceived barriers to bariatric surgery in patients with morbid obesity. Clin Obes. 2016 Apr;6(2):154-60. doi: 10.1111/cob

Aird LN, Hong D, Gmora S, Breau R, Anvari M. The impact of a standardized program on short and long-term outcomes in bariatric surgery. Surg Endosc. 2017 Feb;31(2):801-808. doi: 10.1007/s00464-016-5035-2

Bhatti JA, Nathens AB, Thiruchelvam D, Redelmeier DA. Weight loss surgery and subsequent emergency care use: a population-based cohort study. Am J Emerg Med. 2016 May;34(5):861-5. doi: 10.1016/j.ajem.2016.02.007

Doumouras AG, Saleh F, Gmora S, Anvari M, Hong D. Regional Variations in the Public Delivery of Bariatric Surgery: An Evaluation of the Center of Excellence Model. Ann Surg. 2016 Feb;263(2):306-11. doi: 10.1097/SLA.0000000000001129

Doumouras AG, Saleh F, Hong D. 30-Day readmission after bariatric surgery in a publicly funded regionalized center of excellence system. Surg Endosc. 2016 May;30(5):2066-72. doi: 10.1007/s00464-015-4455-8

Doumouras AG, Saleh F, Tarride JE, Hong D. A population-based analysis of the drivers of short-term costs after bariatric surgery within a publicly funded regionalized center of excellence system. Surg Obes Relat Dis. 2016 Jun;12(5):1023-1031. doi: 10.1016/j.soard.2016.02.016

Elnahas A, Jackson TD, Okrainec A, Austin PC, Bell CM, Urbach DR. The effect of the Ontario Bariatric Network on health services utilization after bariatric surgery: a retrospective cohort study. CMAJ Open. 2016 Sep 14;4(3):E489-E495. doi: 10.9778/cmajo.20160042

Hirpara DH, Cleghorn MC, Kwong J, Saleh F, Sockalingam S, Quereshy FA, Okrainec A, Jackson TD. Perception and Awareness of Bariatric Surgery in Canada: a National Survey of General Surgeons. Obes Surg. 2016 Aug;26(8):1799-805. doi: 10.1007/s11695-015-1975-1

Wharton S, Serodio KJ, Kuk JL, Sivapalan N, Craik A, Aarts MA. Interest, views and perceived barriers to bariatric surgery in patients with morbid obesity. Clin Obes. 2016 Apr;6(2):154-60. doi: 10.1111/cob.12131

Zhang MW, Ho RC, Hawa R, Sockalingam S. Analysis of the Information Quality of Bariatric Surgery Smartphone Applications Using the Silberg Scale. Obes Surg. 2016 Jan;26(1):163-8. doi: 10.1007/s11695-015-1890-5

Diamant A, Cleghorn MC, Milner J, Sockalingam S, Okrainec A, Jackson TD, Quereshy FA. Patient and operational factors affecting wait times in a bariatric surgery program in Toronto: a retrospective cohort study. CMAJ Open. 2015 Jul 17;3(3):E331-7. doi: 10.9778/cmajo.20150020

Zhang MW, Ho RC, Cassin SE, Hawa R, Sockalingam S. Online and smartphone based cognitive behavioral therapy for bariatric surgery patients: Initial pilot study. Technol Health Care. 2015;23(6):737-44. doi: 10.3233/THC-151026

Zhang MW, Ho RC, Hawa R, Sockalingam S. Pilot implementation and user preferences of a Bariatric After-care application. Technol Health Care. 2015;23(6):729-36. doi: 10.3233/THC-151025

Yu CW, Park LJ, Pinto A, et al. The Impact of Bariatric Surgery on Diabetic Retinopathy: A Systematic Review and Meta-Analysis. Am J Ophthalmol. 2021;225:117-127. doi:10.1016/j.ajo.2020.12.033

Atwood ME, Cassin SE, Rajaratnam T, Hawa R, Sockalingam S. The Bariatric Interprofessional Psychosocial Assessment of Suitability Scale predicts binge eating, quality of life and weight regain following bariatric surgery. Clin Obes. 2021;11(1):e12421. doi:10.1111/cob.12421

Li MK, Regina A, Strom M, Kim MS, Philipp-Muller N, Hamilton JK. "It's a tool, not a cure": the preoperative teen perspective on bariatric surgery. Surg Obes Relat Dis. 2021;17(6):1190-1197. doi:10.1016/j.soard.2021.02.004

Bielawska B, Ouellette-Kuntz H, Zevin B, Anvari M, Patel SV. Early postoperative follow-up reduces risk of late severe nutritional complications after Roux-En-Y gastric bypass: a population based study. Surg Obes Relat Dis. 2021;17(10):1740-1750. doi:10.1016/j.soard.2021.05.035

Tian C, Lee Y, Oparin Y, Hong D, Shanthanna H. Benefits of Transversus Abdominis Plane Block on Postoperative Analgesia after Bariatric Surgery: A Systematic Review and Meta-Analysis. Pain Physician. 2021;24(5):345-358.

Sarma S, Sockalingam S, Dash S. Obesity as a multisystem disease: Trends in obesity rates and obesity-related complications. Diabetes Obes Metab. 2021;23 Suppl 1:3-16. doi:10.1111/dom.14290

Dash S, Everett K, Jackson T, et al. Cardiorenal outcomes in eligible patients referred for bariatric surgery. Obesity (Silver Spring). 2021;10.1002/oby.23294. doi:10.1002/oby.23294

Panunzi S, Maltese S, De Gaetano A, Capristo E, Bornstein SR, Mingrone G. Comparative efficacy of different weight loss treatments on knee osteoarthritis: A network meta-analysis. Obes Rev. 2021;22(8):e13230. doi:10.1111/obr.13230

Yang S, Zhou L, Chen Y, Krewski D, Wu Wen S, Xie RH. Maternal and neonatal outcomes in women undergoing Roux-en-Y gastric bypass: A systematic review and meta-analysis. Eur J Obstet Gynecol Reprod Biol. 2021;264:117-127. doi:10.1016/j.ejogrb.2021.07.006

Sarma S, Lipscombe LL. In obesity with T2DM, biliopancreatic diversion increased T2DM remission vs. medical and lifestyle therapy at 10 y. Ann Intern Med. 2021;174(6):JC70. doi:10.7326/ACPJ202106150-070

Barclay AW, Augustin LSA, Brighenti F, et al. Dietary Glycaemic Index Labelling: A Global Perspective. Nutrients. 2021;13(9):3244. Published 2021 Sep 17. doi:10.3390/nu13093244

Chao GF, Urbach DR. Does Bariatric Surgery Prevent Cancer? 2021, Aug 13. Ann Surg. 2021;10.1097/SLA.0000000000005171. doi:10.1097/SLA.0000000000005171

Lee Y, Anvari S, Chu MM, et al. Improvement of kidney function in patients with chronic kidney disease and severe obesity after bariatric surgery: A systematic review and meta-analysis. 2021 Aug 10. Nephrology (Carlton). 2021;10.1111/nep.13958. doi:10.1111/nep.13958

Di Palma A, Liu B, Maeda A, Anvari M, Jackson T, Okrainec A. Marginal ulceration following Roux-en-Y gastric bypass: risk factors for ulcer development, recurrence and need for revisional surgery. Surg Endosc. 2021 May;35(5):2347-2353. doi: 10.1007/s00464-020-07650-0

Doumouras AG, Lee Y, Paterson JM, Gerstein HC, Shah BR, Sivapathasundaram B, Tarride JE, Anvari M, Hong D. Association Between Bariatric Surgery and Major Adverse Diabetes Outcomes in Patients With Diabetes and Obesity. JAMA Netw Open. 2021 Apr 1;4(4):e216820. doi: 10.1001/jamanetworkopen.2021.6820

Doumouras AG, Wong JA, Paterson JM, Lee Y, Sivapathasundaram B, Tarride JE, Thabane L, Hong D, Yusuf S, Anvari M. Bariatric Surgery and Cardiovascular Outcomes in Patients With Obesity and Cardiovascular Disease:: A Population-Based Retrospective Cohort Study. Circulation. 2021 Apr 13;143(15):1468-1480. doi: 10.1161/CIRCULATIONAHA.120.052386

Lovrics O, Butt J, Lee Y, Lovrics P, Boudreau V, Anvari M, Hong D, Doumouras AG. The effect of bariatric surgery on breast cancer incidence and characteristics: A meta-analysis and systematic review. Am J Surg. 2021 Mar 18:S0002-9610(21)00151-3. doi: 10.1016/j.amjsurg.2021.03.016 

Youssef A, Cassin SE, Wnuk S, Leung S, Jackson T, Sockalingam S. The impact of COVID-19 pandemic on bariatric patients' self-management post-surgery. Appetite. 2021 Jul 1;162:105166. doi: 10.1016/j.appet.2021.105166

Imtiaz R, Doumouras AG, Hong D, Anvari M, Shah BR. Long-term impact of bariatric surgery on glycemic control and glucose-lowering therapy for people with type 2 diabetes: population-based cohort study. Surg Obes Relat Dis. 2021 Jun;17(6):1049-1056. doi: 10.1016/j.soard.2021.02.015

Jung F, Lee Y, Manzoor S, Hong D, Doumouras AG. Effects of Perioperative Cannabis Use on Bariatric Surgical Outcomes: a Systematic Review. Obes Surg. 2021 Jan;31(1):299-306. doi: 10.1007/s11695-020-04962-x

Lee Y, Doumouras AG, Yu J, Aditya I, Gmora S, Anvari M, Hong D. Laparoscopic Sleeve Gastrectomy Versus Laparoscopic Roux-en-Y Gastric Bypass: A Systematic Review and Meta-analysis of Weight Loss, Comorbidities, and Biochemical Outcomes From Randomized Controlled Trials. Ann Surg. 2021 Jan 1;273(1):66-74. doi: 10.1097/SLA.0000000000003671

Malik PRA, Doumouras AG, Malhan RS, Lee Y, Boudreau V, Barlow K, Karpinski M, Anvari M. Obesity, Cancer, and Risk Reduction with Bariatric Surgery. Surg Clin North Am. 2021 Apr;101(2):239-254. doi: 10.1016/j.suc.2020.12.003

Nowak K, Di Palma A, Chieu K, Quereshy F, Jackson T, Okrainec A, Serra S, Chetty R. Histologic and Cost-Benefit Analysis of Laparoscopic Sleeve Gastrectomy Specimens Performed for Morbid Obesity. Arch Pathol Lab Med. 2021 Mar 1;145(3):365-370. doi: 10.5858/arpa.2020-0084-OA

Welbourn R, Hollyman M, Kinsman R, Dixon J, Cohen R, Morton J, Ghaferi A, Higa K, Ottosson J, Pattou F, Al-Sabah S, Anvari M, Himpens J, Liem R, Våge V, Walton P, Brown W, Kow L. Bariatric-Metabolic Surgery Utilisation in Patients With and Without Diabetes: Data from the IFSO Global Registry 2015-2018. Obes Surg. 2021 Jun;31(6):2391-2400. doi: 10.1007/s11695-021-05280-6

Anvari S, Samarasinghe Y, Alotaiby N, Tiboni M, Crowther M, Doumouras AG. Iron supplementation following bariatric surgery: A systematic review of current strategies. Obes Rev. 2021 May 19. doi: 10.1111/obr.13268

Semnani-Azad Z, Blanco Mejia S, Connelly PW, Bazinet RP, Retnakaran R, Jenkins DJA, Harris SB, Hanley AJ. The association of soluble CD163, a novel biomarker of macrophage activation, with type 2 diabetes mellitus and its underlying physiological disorders: A systematic review. Obes Rev. 2021 Apr 28. doi: 10.1111/obr.13257

Doumouras AG, Hong D, Lee Y, Tarride JE, Paterson JM, Anvari M. Association Between Bariatric Surgery and All-Cause Mortality: A Population-Based Matched Cohort Study in a Universal Health Care System. Ann Intern Med. 2020 Nov 3;173(9):694-703. doi: 10.7326/M19-3925 

Anvari S, Lee Y, Lam M, Doumouras AG, Hong D. The Effect of Bariatric Surgery on Oral Antibiotic Absorption: a Systematic Review. Obes Surg. 2020 Aug;30(8):2883-2892. doi: 10.1007/s11695-020-04623-z

Lee Y, Anvari S, Sam Soon M, Tian C, Wong JA, Hong D, Anvari M, Doumouras AG. Bariatric Surgery as a Bridge to Heart Transplantation in Morbidly Obese Patients: a Systematic Review and Meta-Analysis. Cardiol Rev. 2020 Nov 6. doi: 10.1097/CRD.0000000000000346

Schwenger KJP, Alghamdi MM, Ghorbani Y, Jackson TD, Okrainec A, Allard JP. Hyposalivation is prevalent in bariatric patients but improves after surgery. Surg Obes Relat Dis. 2020 Oct;16(10):1407-1413. doi: 10.1016/j.soard.2020.06.005

Jarrar A, Budiansky A, Eipe N, Walsh C, Kolozsvari N, Neville A, Mamazza J. Randomised, double-blinded, placebo-controlled trial to investigate the role of laparoscopic transversus abdominis plane block in gastric bypass surgery: a study protocol. BMJ Open. 2020 Jun 28;10(6):e025818. doi: 10.1136/bmjopen-2018-025818

Schwenger KJP, Ghorbani Y, Li C, Fischer SE, Jackson TD, Okrainec A, Allard JP. Obstructive Sleep Apnea and Non-alcoholic Fatty Liver Disease in Obese Patients Undergoing Bariatric Surgery. Obes Surg. 2020 Jul;30(7):2572-2578. doi: 10.1007/s11695-020-04514-3

Youssef A, Keown-Stoneman C, Maunder R, Wnuk S, Wiljer D, Mylopoulos M, Sockalingam S. Differences in physical and mental health-related quality of life outcomes 3 years after bariatric surgery: a group-based trajectory analysis. Surg Obes Relat Dis. 2020 Nov;16(11):1837-1849. doi: 10.1016/j.soard.2020.06.014

Bielawska B, Ouellette-Kuntz H, Patel SV, Anvari M, Zevin B. Severe nutritional complications after bariatric surgery in Ontario adults: a population-based descriptive study. Surg Obes Relat Dis. 2020 Nov;16(11):1784-1793. doi: 10.1016/j.soard.2020.06.028

Gowanlock Z, Lezhanska A, Conroy M, Crowther M, Tiboni M, Mbuagbaw L, Siegal DM. Iron deficiency following bariatric surgery: a retrospective cohort study. Blood Adv. 2020 Aug 11;4(15):3639-3647. doi: 10.1182/bloodadvances.2020001880

Hunt KD, Doumouras AG, Lee Y, Gmora S, Anvari M, Hong D. The effect of surrogate procedure volume on bariatric surgery outcomes: do common laparoscopic general surgery procedures matter? Surg Endosc. 2020 Mar;34(3):1278-1284. doi: 10.1007/s00464-019-06897-6

Lee Y, Tian C, Lovrics O, Soon MS, Doumouras AG, Anvari M, Hong D. Bariatric surgery before, during, and after liver transplantation: a systematic review and meta-analysis. Surg Obes Relat Dis. 2020 Sep;16(9):1336-1347. doi: 10.1016/j.soard.2020.05.012

Tian C, Maeda A, Okrainec A, Anvari M, Jackson T. Impact of preoperative opioid use on health outcomes after bariatric surgery. Surg Obes Relat Dis. 2020 Jun;16(6):768-776. doi: 10.1016/j.soard.2020.02.008

Youssef A, Keown-Stoneman C, Maunder R, Wnuk S, Wiljer D, Mylopoulos M, Sockalingam S. Differences in physical and mental health-related quality of life outcomes 3 years after bariatric surgery: a group-based trajectory analysis. Surg Obes Relat Dis. 2020 Nov;16(11):1837-1849. doi: 10.1016/j.soard.2020.06.014

Anvari S, Lee Y, Lam M, Doumouras AG, Hong D. The Effect of Bariatric Surgery on Oral Antibiotic Absorption: a Systematic Review. Obes Surg. 2020 Aug;30(8):2883-2892. doi: 10.1007/s11695-020-04623-z

Li A, Eshaghpour A, Tseng EK, Douketis JD, Anvari M, Tiboni M, Siegal DM, Ikesaka RT, Crowther MA. Weight-adjusted tinzaparin for venous thromboembolism prophylaxis in bariatric surgery patients weighing 160 kg or more. Thromb Res. 2021 Feb;198:1-6. doi: 10.1016/j.thromres.2020.11.021

Restivo MR, Hall GB, Frey BN, McKinnon MC, Taylor VH. Neural correlates of verbal recognition memory in obese adults with and without major depressive disorder. Brain Behav. 2020 Sep 20;10(12):e01848. doi: 10.1002/brb3.1848

Hawkins M, Leung SE, Lee A, Wnuk S, Cassin S, Hawa R, Sockalingam S. Psychiatric Medication Use and Weight Outcomes One Year After Bariatric Surgery. Psychosomatics. 2020 Jan-Feb;61(1):56-63. doi: 10.1016/j.psym.2019.10.009

Santiago VA, Cassin SE, Wnuk S, Du C, Hawa R, Parikh SV, Sockalingam S. "If you're offered help, take it": A qualitative study examining bariatric patients' experience of telephone-based cognitive behavioural therapy. Clin Obes. 2021 Apr;11(2):e12431. doi: 10.1111/cob.12431

Di Palma A, Alhabdan S, Maeda A, Mattu F, Chetty R, Serra S, Quereshy F, Jackson T, Okrainec A. Unexpected histopathological findings after sleeve gastrectomy. Surg Endosc. 2020 May;34(5):2158-2163. doi: 10.1007/s00464-019-07002-7.

Sockalingam S, Leung SE, Hawa R, Wnuk S, Parikh SV, Jackson T, Cassin SE. Telephone-based cognitive behavioural therapy for female patients 1-year post-bariatric surgery: A pilot study. Obes Res Clin Pract. 2019 Sep-Oct;13(5):499-504. doi: 10.1016/j.orcp.2019.07.003 

Lee Y, Yu J, Doumouras AG, Ashoorion V, Gmora S, Anvari M, Hong D. Intravenous Acetaminophen Versus Placebo in Post-bariatric Surgery Multimodal Pain Management: a Meta-analysis of Randomized Controlled Trials. Obes Surg. 2019 Apr;29(4):1420-1428. doi: 10.1007/s11695-019-03732-8

Lovrics O, Doumouras AG, Gmora S, Anvari M, Hong D. Metabolic outcomes after bariatric surgery for Indigenous patients in Ontario. Surg Obes Relat Dis. 2019 Aug;15(8):1340-1347. doi: 10.1016/j.soard.2019.05.035

Purwar B, Cartwright R, Cavalcanti G, Digesu GA, Fernando R, Khullar V. The impact of bariatric surgery on urinary incontinence: a systematic review and meta-analysis. Int Urogynecol J. 2019 Aug;30(8):1225-1237. doi: 10.1007/s00192-018-03865-x

Lee Y, McKechnie T, Doumouras AG, Handler C, Eskicioglu C, Gmora S, Anvari M, Hong D. Diagnostic Value of C-Reactive Protein Levels in Postoperative Infectious Complications After Bariatric Surgery: a Systematic Review and Meta-Analysis. Obes Surg. 2019 Jul;29(7):2022-2029. doi: 10.1007/s11695-019-03832-5

Lee Y, Ellenbogen Y, Doumouras AG, Gmora S, Anvari M, Hong D. Single- or double-anastomosis duodenal switch versus Roux-en-Y gastric bypass as a revisional procedure for sleeve gastrectomy: A systematic review and meta-analysis. Surg Obes Relat Dis. 2019 Apr;15(4):556-566. doi: 10.1016/j.soard.2019.01.022

Houlden RL, Yen JL, Moore S. Effectiveness of an Interprofessional Glycemic Optimization Clinic on Preoperative Glycated Hemoglobin Levels for Adult Patients With Type 2 Diabetes Undergoing Bariatric Surgery. Can J Diabetes. 2018 Oct;42(5):514-519. doi: 10.1016/j.jcjd.2017.12.011

Anvari M, Lemus R, Breau R. A Landscape of Bariatric Surgery in Canada: For the Treatment of Obesity, Type 2 Diabetes and Other Comorbidities in Adults. Can J Diabetes. 2018 Oct;42(5):560-567. doi: 10.1016/j.jcjd.2017.12.007

Honarmand K, Chetty K, Vanniyasingam T, Anvari M, Chetty VT. Type 2 diabetes remission rates 1-year post-Roux-en-Y gastric bypass and validation of the DiaRem score: the Ontario Bariatric Network experience. Clin Obes. 2017 Jun;7(3):176-182. doi: 10.1111/cob.12189 

Saleh F, Doumouras AG, Gmora S, Anvari M, Hong D. Outcomes the Ontario Bariatric Network: a cohort study. CMAJ Open. 2016 Aug 4;4(3):E383-E389. doi: 10.9778/cmajo.20150112 

Kuk JL, Wharton S. Differences in weight change trajectory patterns in a publicly funded adult weight management centre. Obes Sci Pract. 2016 Mar 23;2(2):215-223. doi: 10.1002/osp4.35 

Thiara G, Yanofksy R, Abdul-Kader S, Santiago VA, Cassin S, Okrainec A, Jackson T, Hawa R, Sockalingam S. Toronto Bariatric Interprofessional Psychosocial Assessment Suitability Scale: Evaluating A New Clinical Assessment Tool for Bariatric Surgery Candidates. Psychosomatics. 2016 Mar-Apr;57(2):165-73. doi: 10.1016/j.psym.2015.12.003 

Larjani S, Spivak I, Hao Guo M, Aliarzadeh B, Wang W, Robinson S, Sockalingam S, Aarts MA. Preoperative predictors of adherence to multidisciplinary follow-up care postbariatric surgery. Surg Obes Relat Dis. 2016 Feb;12(2):350-6. doi: 10.1016/j.soard.2015.11.007

Tarride JE, Doumouras AG, Hong D, et al. Comparison of 4-Year Health Care Expenditures Associated With Roux-en-Y Gastric Bypass vs Sleeve Gastrectomy. JAMA Netw Open. 2021;4(9):e2122079. Published 2021 Sep 1. doi:10.1001/jamanetworkopen.2021.22079

Fecso AB, Di Palma A, Maeda A, Englesakis M, Jackson T, Okrainec A. Operative management of recalcitrant marginal ulcers following laparoscopic Roux-en-Y gastric bypass for morbid obesity: a systematic review. 2021, Aug 3. Surg Obes Relat Dis. 2021;S1550-7289(21)00370-1. doi:10.1016/j.soard.2021.07.017

Iranmanesh P, Boudreau V, Barlow K, Malik PRA, Ramji K, Gmora S, Hong D, Anvari M. Comparison of single- versus double-anastomosis duodenal switch: a single-center experience with 2-year follow-up. Int J Obes (Lond). 2021 May 11. doi: 10.1038/s41366-021-00844-z

Zevin B, Martin M, Dalgarno N, et al. Survey of perceptions and educational needs of primary care providers regarding management of patients with class II and III obesity in Ontario, Canada. BMC Fam Pract. 2021;22(1):14. Published 2021 Jan 9. doi:10.1186/s12875-020-01356-x

Hunt KD, Doumouras AG, Lee Y, Gmora S, Anvari M, Hong D. The effect of surrogate procedure volume on bariatric surgery outcomes: do common laparoscopic general surgery procedures matter? Surg Endosc. 2020 Mar;34(3):1278-1284. doi: 10.1007/s00464-019-06897-6

Gabrielli ME, Saun TJ, Jung JJ, Grantcharov TP. Assessment of 3-Dimensional vs 2-Dimensional Imaging and Technical Performance Using a Multiport Intraoperative Data Capture and Analytic System for Patients Undergoing Laparoscopic Roux-en-Y Gastric Bypass Surgery. JAMA Netw Open. 2020 Jan 3;3(1):e1920084. doi: 10.1001/jamanetworkopen.2019.20084 

Lee Y, Ellenbogen Y, Doumouras AG, Gmora S, Anvari M, Hong D. Single- or double-anastomosis duodenal switch versus Roux-en-Y gastric bypass as a revisional procedure for sleeve gastrectomy: A systematic review and meta-analysis. Surg Obes Relat Dis. 2019 Apr;15(4):556-566. doi: 10.1016/j.soard.2019.01.022

Ko G, Smith A, Cassie S, Zevin B. Incidentally discovered intestinal nonrotation at time of bariatric surgery: Which operation to perform? Surg Obes Relat Dis. 2019 Mar;15(3):424-430. doi: 10.1016/j.soard.2018.12.036

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