2F. G. Messenb?ck,R. Steiner,M. Mair,M. Bergmann,A. Gruber,G. Spaun.Procedure for Prolapse and Hemorrhoids (PPH) — Entwicklung eines standardisierten Operationsablaufes[J].Acta Chirurgica Austriaca.2001(2)
5Longo A. Treatment of hemorrhoids disease by reduction of mucosa and hemorrhoids prolapse with a circular suturing device: a new procedure. Rome Italy[M]. Proceedings of the 6th World Congress of Endoscopic Surgery , 1998 : 3.
6Rowsell M, BelloM, Hemingway DM . Circum ferential mucosectomy (stapled haemorrhoidectomy) versus conventional haemorrhoidectomy : randomized con- roiled trial[J]. Lancet , 2000 , 335(9215):779-781.