In this podcast, Series 4, Chapter 1, Dr. Barsuk interviews Dr. Roy Soetikno, gastroenterologist, advanced endoscopist, and Professor of Medicine at the University of California San Francisco.  Dr.  Soetikno is internationally renowned for his efforts to disseminate knowledge about simulation-based mastery learning in endoscopy. They discuss Dr. Soetikno's international work on improving endoscopy training through the use of the science of expertise and simulation-based mastery learning.