RT Journal Article SR Electronic T1 Validity of polyethyleneglycol in the study of the total pancreatic secretion in man after stimulation by secretin, pancreozymin, or food. JF Gut JO Gut FD BMJ Publishing Group Ltd and British Society of Gastroenterology SP 599 OP 604 DO 10.1136/gut.8.6.599 VO 8 IS 6 A1 H Worning YR 1967 UL http://gut.bmj.com/content/8/6/599.abstract AB