1. Closed hemorrhoidectomy;Ferguson;Dis Colon Rectum,1959
2. Closed hemorrhoidectomy with local anesthesia;Khubchandani;Surg Gynecol Obstet,1972
3. Long term follow-up of closed hemorrhoidectomy;McConnell;Dis Colon Rectum,1983
4. Survey of hemorrhoidectomy practices: open versus closed technique;Wolf;Dis Colon Rectum,1979