1. Conservative management of hemorrhoids. I. Injection, freezing and ligation;Alexander-Williams;Clin. Gastroenterol.,1975
2. Conservative management of hemorrhoids. III. Partial internal sphincterotomy;Allgower;Clin. Gastroenterol.,1975
3. Office ligation of internal hemorrhoids;Blaisdell;Am. J. Surg.,1958
4. Office ligation treatment of hemorrhoids;Barron;Dis. Colon Rectum,1963
5. Hemorrhoids, varicose veins and deep vein thrombosis: Epidemiologic features and suggested causative factors;Burkitt;Canad. J. Surg.,1975