RT Journal Article SR Electronic T1 Caecal surprise JF Frontline Gastroenterology JO Frontline Gastroenterol FD BMJ Publishing Group Ltd SP flgastro-2022-102327 DO 10.1136/flgastro-2022-102327 A1 Umang Rafiq Qazi A1 Thomas P Chapman A1 Peter John Basford YR 2023 UL http://fg.bmj.com/content/early/2023/03/16/flgastro-2022-102327.abstract AB