1. Narducci F, Bassotti G, Gaburri M, Morelli A. Twenty four hour manometric recording of colonic motor activity in healthy man. Gut 1987;28:17–25.
2. Reynolds JR, Evans DF, Clarke AG, Hardcastle JD. Twenty-four hour colonic motility patterns in normal ambulant subjects. J Ambulatory Monitoring 1989;2:303–12.
3. Furukawa Y, Cook I, Panagopoulos V,et al. Regional and diurnal variation in human colonic pressure activity characterised by prolonged pan-colonic manometry [abstract]. Gastroenterology 1990, 98:A352.
4. Crowell MD, Bassotti G, Cheskin L, Schuster M, Whitehead WE. Method for prolonged ambulatory monitoring of high-amplitude propagated contractions from colon. Am J Physiol. 1991, 261:G263–8.
5. Steadman CJ, Phillips SF, Camilleri M, Haddad AC, Hanson RB. Variation of muscle tone in the human colon. Gastroenterology 1991;101:373–81.