Episode 3 of CRAMSURG - Clinical Reasearch Appraisal and Methodology for Surgical Trainees. The paper for discussion is Fluorescence or X-ray cholangiography in elective laparoscopic cholecystectomy: a randomized clinical trial (BJS, 2020). The teaching topic is Randomised Clinical Trials: Introduction. Brought to you by CRAMSURG www.cramsurg.org.