RT Journal Article SR Electronic T1 Strategies for hepatitis B infection. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 575 OP 575 DO 10.1136/gut.34.4.575-c VO 34 IS 4 A1 P J Wismans A1 J van Hattum YR 1993 UL http://gut.bmj.com/content/34/4/575.4.abstract AB