RT Journal Article SR Electronic T1 Consideration of histopathological subtypes and biopsy techniques in Barrett’s oesophagus surveillance programmes JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 448 OP 448 DO 10.1136/gut.42.3.448-b VO 42 IS 3 A1 R C FITZGERALD A1 W R BURNHAM YR 1998 UL http://gut.bmj.com/content/42/3/448.2.abstract AB