3Wolff BG, Penberton J H. Benign anoreetal .. anal fissure P180 ASCRS Textbook of Colon and Rectal Surgery Springer Science+ Business Media[J]. LLC, 2007.
4Hyman N. Incontinence after lateral internal sphincter- otomy:a prospective study and quality of life assess- ment[J]. Dis Colon Rectum , 2004,47 : 35-38.
5Corman ML. Anal fissure treatment P126 Colon and Rectal Surgery 4th edition [J]. Lippincott-Raven Pub- lishers, 1998.
6Gupta PJ, Kalaskar S. Removal of hypertrophied anal papillae and fibrous anal polyps increases patient satis- faction after anal fissure surgery[J]. Tech Coloproc- tol,2003,7:155-158 .