4Benninga M,Candy DC,Catto-Smith AG,et al.The Paris Consensus on Childhood Constipation Terminology (PACCT) Group.J Pediatr Gastroenterol Nutr,2005,40(3):273-275.
5Garrigues V,Galvez C,Ortiz V,et al.Prevalence of constipation:agreement among several criteria and evaluation of the diagnostic accuracy of qualifying symptoms and self-reported definition in a population-based survey in Spain.Am J Epidemiol,2004,159(5):520-526.
6Boccia G,Manguso F,Coccorullo P,et al.Functional defecation disorders in children:PACCT criteria versus RomeⅡ criteria.J Pediatr,2007,151(4):394-398.
7Schonwald A,Sherritt L,Stadtler A,et al.Factors associated with difficult toilet training.Pediatrics,2004,113(6):1753-1757.
9Chang L,Toner BB,Fukudo S,et al.Gender,age,society,culture,and the patient′s perspective in the functional gastrointestinal disorders.Gastroenterology,2006,130(5):1435-1446.
10Harari D,Gurwitz JH,Avorn J,et al.Bowel habit in relation to age and gender.Findings from the National Health Interview Survey and clinical implications.Arch Intern Med,1996,156(3):315-320.