Episode 11 of CRAMSURG - Clinical Reasearch Appraisal and Methodology for Surgical Trainees. The paper for discussion is Is It Safe to Manage Acute Cholecystitis Nonoperatively During Pregnancy? A Nationwide Analysis of Morbidity According to Management Strategy, Annals of Surgery, Sept 2020 The teaching topic is measures of risk part 4: survival curves. Brought to you by CRAMSURG www.cramsurg.org.