4Bharucha AE. Constipation [ J ]. Best Pract Res Clin Gastroenterol,2007,21 (4) :709 -731.
5Fucini C, Ronchi O, Elbetti C. Elect romyography of the pelvic floor musculature in the assessment of obstructed defecation symptoms[J]. Dis Colon Rectum,2001,44(8) :1168 -1175.
6Chang HS, Myung S J, Yang SK, et al. Effect of electrical stimulation in constipated patients with impaired rectal sensation[ J ]. Int J Colorectal Dis,2003,18(5) :433 -438.
7Pesoatori M, Spyrou M, Pulvirenti d'Urso A. A prospective evaluation of occult disorders in obstructed defecation using the iceberg diagram[ J ]. Colorectal Dis, 2007,9 ( 5 ) : 452 - 456.
