1. Functional bowel disorders and functional abdominal pain;Thompson,2000
2. Does the menstrual cycle affect anorectal physiology?;Jackson;Dig Dis Sci,1994
3. Laxative in the treatment of constipation in pregnant and breast-feeding mother;Greenhalf;Practitioner,1973
4. Bowel habits in pregnancy;Levy;Digestion,1977
5. Pattern of gastrointestinal and somatic symptoms across the menstrual cycle;Heitkemper;Gastroenterology,1992