RT Journal Article SR Electronic T1 Helicobacter pylori and peptic ulcer recurrence. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1293 OP 1293 DO 10.1136/gut.33.9.1293 VO 33 IS 9 A1 Guslandi, M YR 1992 UL http://gut.bmj.com/content/33/9/1293.1.abstract AB