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In the light of our own experience with a series of 52 cases the most suitable examination procedure is discussed in detail.<\/jats:p>","DOI":"10.1136\/gut.11.4.307","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T17:41:31Z","timestamp":1190137291000},"page":"307-313","source":"Crossref","is-referenced-by-count":1,"title":["Diagnostic procedure in bleeding of obscure origin from the alimentary canal"],"prefix":"10.1136","volume":"11","author":[{"given":"Franz","family":"B\u00e1r\u00e1ny","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lars H:Son","family":"Nilsson","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1970,4,1]]},"reference":[{"key":"ref_1","first-page":"329","article-title":"A new method of duodenal intubation; a preliminary note","volume":"5","author":"Abrams, A.; Jarvis, G. 0","year":"1912","unstructured":"Abrams, A., and Jarvis, G. 0. (1912). A new method of duodenal intubation; a preliminary note. Arch. Diagn., 5, 329-334.","journal-title":"Arch. Diagn"},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"1032","DOI":"10.1136\/bmj.2.5052.1032","article-title":"Measurement of gastro-intestinal bleeding using radioactive chromium","volume":"2","author":"Bannerman, R.M.","year":"1957","unstructured":"Bannerman, R. M. (1957). Measurement of gastro-intestinal bleeding using radioactive chromium. Brit. med. J., 2, 1032-1034.","journal-title":"Brit. med. J"},{"key":"ref_3","first-page":"797","article-title":"The preoperative radiographic demonstration of intra-abdominal bleeding from undetermined sites by percutaneous selective celiac and superior mesenteric arteriography","volume":"58","author":"Baum, S.; Nusbaum, M.; Blakemore, W.S.; Finkelstein, A.K.","year":"1965","unstructured":"Baum, S., Nusbaum, M., Blakemore, W. S., and Finkelstein, A. K. (1965). 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Hypotonic duodenography."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"515","DOI":"10.1016\/0002-9610(58)90968-1","article-title":"The surgical management of massive melena","volume":"96","author":"Stahlgren, L.H.; Ferguson, L.K.","year":"1958","unstructured":"Stahlgren, L. H., and Ferguson, L. K. (1958). The surgical management of massive melena. Amer. J. Surg., 96, 515-521.","journal-title":"Amer. J. Surg"},{"key":"ref_10","first-page":"644","article-title":"Fluorescein string test for localization of upper gastrointestinal hemorrhage","volume":"44","author":"Traphagen, D.W.; Karlan, M.","year":"1958","unstructured":"Traphagen, D. W., and Karlan, M. (1958). Fluorescein string test for localization of upper gastrointestinal hemorrhage. 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