3Garcia-Aguilar J, Belmonte C, Wong WD, et al. Anal fistula surgery:factors associated with recurrence and incontinence. Dis Colon Rectum, 1996,39:723-729.
4Dwarkasing S, Hussain SM, Krestin GP. Magnetic resonance imaging of perianal fistulas. Semin Ultrasound CT MR, 2005,26:247-258.
5Buchanan GN, Halligan S, Bartram CI, et al. Clinical examination, endosonography, and MR imaging in preoperative assessment of fistula in ano: comparison with outcome-based reference standard. Radiology,2004,233:674-681.
6Parks AG, Gordon PH, Hardcastle JD. A classification of fistulain-ano. Br J Surg,1976,63:1-12.
7Lilius HG. Fistula in ano: an investigation of human foetal anal ducts and intramuscular glands and a clinical study of 150 patients. Acta Chir Scand Suppl ,1968,383:7-88.
8Garcia-Aguilar J,Belmonte C,Wong WD,et al.Anal fistula surgery.Factors associated with recurrence and incontinence.Dis Colon Rectum,1996,39:723
9Parks AG,Gordon PH,Hardcastle JD.A classification of fistula-in-ano.Br J Surg,1976,63:1
10Lilius HG.Fistula in ano:An investigation of human foetal anal ducts and intramuscular glands and a clinical study of 150 patients.Acta Chir Scand Suppl,1968,383:7