RT Journal Article SR Electronic T1 Large and middle hepatitis B surface antigen: the lower the better? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP gutjnl-2018-316030 DO 10.1136/gutjnl-2018-316030 A1 Hsuan-Ho Lin A1 Tai-Chung Tseng A1 Jia-Horng Kao YR 2018 UL http://gut.bmj.com/content/early/2018/03/07/gutjnl-2018-316030.abstract AB