1. Department of Medical Education, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran;
2. Liver and Pancreatobiliary Diseases Research Center, Digestive Disease Research Institute, Tehran University of Medical Sciences, Tehran, Iran;
3. Department of Internal Medicine, Health Professions Education Research Center, Tehran University of Medical Sciences, Tehran, Iran;
4. Medical-Surgical Nursing Department, School of Nursing and Midwifery, Tehran University of Medical Sciences, Tehran, Iran