• Lanas, A., & Chan, F. K. (2017). Peptic ulcer disease. The Lancet, 390(10094), 613-624.

  • Katz, P. O., Gerson, L. B., & Vela, M. F. (2013). Guidelines for the diagnosis and management of gastroesophageal reflux disease. The American Journal of Gastroenterology, 108(3), 308-328.  

  • Shaffer, E. A. (2006). Gallstone disease: epidemiology of gallbladder stone disease. Best Practice & Research Clinical Gastroenterology, 20(6), 981-996.  

  • Banks, P. A., Bollen, T. L., Dervenis, C., Gooszen, H. G., Johnson, C. D., Sarr, M. G., … & International Association of Pancreatology. (2013). Classification of acute pancreatitis—2012: revision of the Atlanta classification and definitions by international consensus. Gut, 62(1), 102-111.  

  • Abraham, C., & Cho, J. H. (2009). Inflammatory bowel disease. New England Journal of Medicine, 361(21), 2066-2078.

  • Swagerty Jr, D. L., Walling, A. D., & Klein, R. M. (2002). Lactose intolerance. American Family Physician, 65(9), 1845-1850.