1. Department of Medicine, Division of Gastroenterology, University of California San Francisco, San Francisco, CA, USA;
2. Department of Medicine, Uniformed Services University of the Health Sciences, Bethesda, MD, USA;
3. Center for Research and Development of Education, University Medical Center Utrecht, Utrecht, Netherlands;
4. Department of Medicine, Research and Development in Medical Education, University of California San Francisco, San Francisco, CA, USA;
5. Department of Education, Utrecht University, The Netherlands;
6. Department of Psychiatry, Zucker School of Medicine at Hofstra/Northwell, Hempstead, NY, USA