1. Hales CM, Carroll MD, Fryar CD, Ogden CL (2017) Prevalence of obesity among adults and youth: United States, 2015-2016. US Department of Health and Human Services, Centers for Disease Control and Prevention, National Center for Health Statistics
2. English WJ, DeMaria EJ, Brethauer SA, Mattar SG, Rosenthal RJ, Morton JM (2017) American Society for Metabolic and Bariatric Surgery estimation of metabolic and bariatric procedures performed in the United States in 2016. Surg Obes Relat Dis 14(3):259–263
3. Shiffman ML, Sugerman HJ, Kellum JM, Brewer WH, Moore EW (1991) Gallstone formation after rapid weight loss: a prospective study in patients undergoing gastric bypass surgery for treatment of morbid obesity. Am J Gastroenterol 86(8):1000–1005
4. Stender S, Nordestgaard BG, Tybjaerg-Hansen A (2013) Elevated body mass index as a causal risk factor for symptomatic gallstone disease: a Mendelian randomization study. Hepatology 58(6):2133–2141
5. Skinner M, Popa D, Neumann H, Wilcox CM, Mönkemüller K (2014) ERCP with the overtube-assisted enteroscopy technique: a systematic review. Endoscopy 46(07):560–572