RT Journal Article SR Electronic T1 On the nature of the acid and saline matters usually existing in the stomachs of animals JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 45 OP 49 DO 10.1136/gut.15.1.45 VO 15 IS 1 A1 Prout, William YR 1974 UL http://gut.bmj.com/content/15/1/45.abstract AB