(1)
Fu, W.; Leung, J.; Wang, Y.; Chuang, T.-W.; Liao, W.-C.; Meng, W.; Zhou, W.; Li, X. What Would Be the Appropriate Number of Clinical ERCP Cases for Trainees to Acquire Basic Competence? A Systematic Review and Meta-Analysis. Turkish Journal of Gastroenterology 2021, 32, 1-10.