2) Baliant JA, Sarfeh IJ, Freid MB : Gastrointestinal bleeding. Diagnosis and management. A. Wiley Medical Publication. New York, 1977
3) Noer RJ, Hamilton JE, Williams DJ, et al : Rectal hemorrhage : moderate and severe. Ann Surg 155 : 794-805, 1962
4) Baum S, Athanasoulis CA, Waltman AC, et al : Angiodysplasia of the right colon : A cause of gastrointestinal bleeding. Am J Roentgenol 129 :789-794, 1977
5) Marx FW, Gray RK, Duncan AM, et al: Angiodysplasia as a source of intestinal bleeding. Am J Surg 134 : 125-130, 1977