RT Journal Article SR Electronic T1 Primary Liver Tumours JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 649 OP 649 DO 10.1136/gut.20.7.649-a VO 20 IS 7 A1 D. B. A. Silk YR 1979 UL http://gut.bmj.com/content/20/7/649.2.abstract AB