Enck, P Circadian variation of rectal sensitivity and gastrointestinal peptides in healthy volunteers. [electronic resource] - Neurogastroenterology and motility Jan 2009 - 52-8 p. digital Publication Type: Journal Article; Research Support, Non-U.S. Gov't ISSN: 1365-2982 Standard No.: 10.1111/j.1365-2982.2008.01182.x doi Subjects--Topical Terms: AdultCholecystokinin--bloodCircadian Rhythm--physiologyCompliance--physiologyGastrointestinal Hormones--bloodHumansMaleManometryMotilin--bloodPancreatic Polypeptide--bloodRectum--physiologySensory Thresholds--physiology