RT Journal Article SR Electronic T1 British Society of Gastroenterology guidelines for the diagnosis of Barrett’s oesophagus: are we casting the net too wide? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1821 OP 1822 VO 55 IS 12 A1 S J Murphy A1 B T Johnston A1 L J Murray YR 2006 UL http://gut.bmj.com/content/55/12/1821.abstract AB