RT Journal Article SR Electronic T1 Endoscopy for upper gastrointestinal bleeding: where are we in 2017? JF Frontline Gastroenterology JO Frontline Gastroenterol FD BMJ Publishing Group Ltd SP 94 OP 97 DO 10.1136/flgastro-2016-100791 VO 8 IS 2 A1 Katy Mary Waddell A1 Adrian John Stanley A1 Allan John Morris YR 2017 UL http://fg.bmj.com/content/8/2/94.abstract AB