1. Operative mesenteric angiography in the search for the site of bleeding in unexplained gastrointestinal hemorrhage. A preliminary report;Margolis;Surgery,1960
2. Angiodysplasia—an uncommon cause of colonic bleeding;Danesh;Int J Colorectal Dis,1987
3. A prospective study of bidirectional endoscopy (colonoscopy and upper endoscopy) in the evaluation of patients with occult gastrointestinal bleeding;Zuckerman;Am J Gastroenterol,1992
4. Lower intestinal bleeding in the elderly;Boley;Am J Surg,1979
5. Arteriovenous malformation in chronic gastrointestinal bleeding;Cavett;Ann Surg,1977