6Spiller RC, Parkins PA. Recurrent gastrointestinal bleeding of obscure origin: report of 17 cases and guide to logial menagement. Br J Surg,1983,70(80) :489.
7Browder W, Cerise EJ, Litwin MS. Impact of emergency angiography in lower gastrointestinal bleeding. Ann Surg, 1986,204(5) :530.
8Lau WY, Nagan H, Chu W, et al. Repeat selective viseral angiography in patient with gastrointestinal bleeding of Ibscure origin. Br J Surg,1989,76(3): 226.
9Foutch PG, Sawyer R, Sanowski PA. Push-enteros copy for diagnosis of patients with gastrointestinal bleeding of obscure origin. Gasrointest,1990,36(4) :337.
10Lewis BS, Wenger JS, Waye JD. Small bowel enterscopy and intraoperative enteroscopy for obscure gasrointestinal bleeding. Am J Gastroenterol, 1991,86(2): 171.