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2. A new approach to colonic polyps;Wolff;Ann Surg,1973
3. Complications of colotomy and polypectomy;Kleinfeld;Surg Gynecol Obstet,1960
4. Complications of colotmy and colonoscopy;Swinton;Dis Colon Rectum,1963
5. Trend in the diagnosis and management of polyps and cancer of the colon and rectum;Teffall;Am Surg,1972