Schuster KM, O'Connor R, Cripps M, Kuhlenschmidt K, Taveras L, Kaafarani HM, El Hechi M, Puri R, Mull J, Schroeppel TJ, Rodriquez J, Cullinane DC, Cullinane LM, Enniss TM, Sensenig R, Zilberman B, Crandall M. Multicenter validation of the American Association for the Surgery of Trauma grading scale for acute cholecystitis. J Trauma Acute Care Surg. 2021 01 01; 90(1):87-96.