RT Journal Article SR Electronic T1 Barrett’s oesophagus and colorectal neoplasia: scope for screening? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 775 OP 776 DO 10.1136/gut.44.6.775 VO 44 IS 6 A1 RICHARD F A LOGAN A1 MAEVE M SKELLY YR 1999 UL http://gut.bmj.com/content/44/6/775.abstract AB