8Longo 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.
7Longo A.Treatment of hemorrhoids disease by reduction of mucosa and hemorrhoidal prolapse with a circular suturing device: a new procedure. proceedings of the 6th World Congress of Endoscopic Surgery . 1998