3Longo A. Treatment ot haemorrhoids disease by reduction of mueol and haemorrhoidal prolapse with a circular suturing de- vice:a new proeedure[J]. Rome, Italy: Proceedings of the 6th Wodd Congress of Endoseopie Surgery, 1998:3.
4Sun WM, Read NW,Shorthouse AJ. Hypertenine anal cushions as a case of the high anal pressures in patients with hemorrhoids. Br J Surg, 1990,77 : 458-462.