Mohamed, , S. Y.; Tarek-Hefnawy, M.; Amer, S. A.; Mansour, B.; Mostafa-Asla, M.; Piscoya, A.; Mansilla-Vivar, R.; Emara, M. H. tility of ouTube nline earning for unior astrointestinal ndoscopists: ewarding or eterring ractice?. Rev Gastroenterol Peru 2023, 43, 20-30.