RT Journal Article SR Electronic T1 Twenty four hour intragastric acidity analysis for the future. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 1 OP 9 DO 10.1136/gut.27.1.1 VO 27 IS 1 A1 Walt, R YR 1986 UL http://gut.bmj.com/content/27/1/1.abstract AB