RT Journal Article SR Electronic T1 COVID-19 and endoscopy training JF Frontline Gastroenterology JO Frontline Gastroenterol FD BMJ Publishing Group Ltd SP 413 OP 414 DO 10.1136/flgastro-2020-101573 VO 11 IS 5 A1 Wisam Jafar YR 2020 UL http://fg.bmj.com/content/11/5/413.2.abstract AB