RT Journal Article SR Electronic T1 Helicobacter pylori and dyspepsia: trick or treat? JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 164 OP 165 DO 10.1136/gut.45.2.164 VO 45 IS 2 A1 ROGER JONES YR 1999 UL http://gut.bmj.com/content/45/2/164.abstract AB