1Eisenhammer S. The final evaluation and classification of surgical treatment of the primary anorectal cryptoglandular intermuscular(intersphincter) fistulous absecess and fistula. Dis Colon Rectum,1978,21:257.
2Parks A,Gordon Ph, Hardcastle J. A classification of fistula-in-ano. Br J Surg, 1976,63: 1-12.
5Goligher JC. A critique of anal glandular infection in aetiology and treatment of idiopathic anorectal abscesses and fistulas. Br J Surg,1969,54:977.
6Shafik A. A new concept of the anatomy of the anal sphincter mechanism and the physiology of defecation VI. The central abscess:a new clinicopathologic entity in the genesis of anorectal suppuration. Dis Colon Rectum, 1979,22 : 336.
7Kucharzik T, Lugering N, Rautenberg K, et al. Role of M cells in intestinal barrier function. Ann N Y Acad Sci, 2000,915 : 171-183.
8Seow C, Phillips PK. Insights gained from the managements of problematical anal fistulae at St. Mark's Hospital 1984-88. Br J Surg,1991,78:539.
9Beets-Tan RGH,Beet GL, van-der Hoop AG, et al. Preoperative MR imaging of anal fistulas: Does it really help the surgeon? Radiology, 2001,218 : 75.
10DeSauza NM,Gilderdale DJ ,Coutts GA,et al. MRI of fistula-in-ano:a comparison of endoanal coil with external phased array coil techniques. J Comput Assist Tomogr, 1998,22:357.
