RT Journal Article SR Electronic T1 Biopsy Pathology of the Oesophagus, Stomach and Duodenum JF Journal of Clinical Pathology JO J Clin Pathol FD BMJ Publishing Group Ltd and Association of Clinical Pathologists SP 177 OP 178 DO 10.1136/jcp.50.2.177-e VO 50 IS 2 A1 N A Shepherd YR 1997 UL http://jcp.bmj.com/content/50/2/177.5.abstract AB