2) Acute Gallbladder Disease (LO3) : (updated 1/28/23)
    a) American Family Physician - “Surgical and Non-Surgical Management of Gallstones” May 15, 2014:
        https://www.aafp.org/dam/brand/aafp/pubs/afp/issues/2014/0515/p795.pdf (REQUIRED READING)
    b) New England Journal of Medicine - “Acute Calculous Cholecystitis” - June 26, 2008
        http://www.nejm.org/doi/pdf/10.1056/NEJMcp0800929
        “ERCP for Gallstone Pancreatitis” January 9, 2014:
        http://www.nejm.org/doi/pdf/10.1056/NEJMct1208450
    c) Up-To-Date - “Uncomplicated Gallstone Disease in Adults”;
        http://www.uptodate.com/contents/uncomplicated-gallstone-disease-in-adults?search=gallbladder+disease&source=search_result&selectedTitle=1~150
        “Acute Cholecystitis: Pathogenesis, Clinical Features and Diagnosis”;
        http://www.uptodate.com/contents/acute-cholecystitis-pathogenesis-clinical-features-and-diagnosis?search=gallbladder+disease&source=search_result&selectedTitle=2%7E150
        “Treatment of acute calculous cholecystitis”-
        https://www.uptodate.com/contents/treatment-of-acute-calculous-cholecystitis?

        search=cholecystitis&source=search_result&selectedTitle=2~150&usage_type=default&display_rank=2