4Basdanis G, Harlanftis N, Michalopoulos A, et al. Surgical treatment of haemorrids with the use the circular stapler and open haemorroidectomy. A comparative study. Techniques in Coloproctology (Italy), 2000, 4(3): 137-140.
5Ganio E, Altomare DF, Gabrielli F, et al. Prospective randomized multicentye trial comparing stapled with open haemorroidectomy. British Journal of Surgery,2001, 88 (5): 669.
6Beattie GC, Loudon MA. Follow-up confirms sustained benefit of circumferential stapled anoplasty in the management of prolapsing haemorrhoids. British Journal of Surgery, 2001, 88, 850-852.
7Amaud JP, Pessaux P, De Manzini N, et al. Treatment of hemorrhoids with circular stapler new alternative to conventionan methods: a prospective study of 140patients. Journal of the American College of Surgeons(United States), 2001, 193 (2): 161-165.
8Luigi Maria Permice, Barbara Bartalucci, Lapo Bencini,et al. Early and Late (Ten Years) Experience with Circular Stapler Hemorroidectomy. Dis Colon Rectum.2001, 44 (6): 836-841.
9Rowsell M, Bello M, Hemingway DM. Circumferential mucosectomy ( staped haemorrhoidectomy ) versus conventional haemorrhoidectomy: randomized controlledtrial. Lancet, 2000, 355 (9206): 779-781.
10Francesco Gabrielli, Marco Chiarelli, Ugo CIOFFI, et al.Day Surgery for Mucosal-Hemorrhoidal Prolapse Using a Circular Staplar and Modified regional Anesthesia: Discolon Rectum, 2001, 44 (6): 842-844.