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Needle knife papillotomy is a valuable adjunct to conventional techniques of biliary access.<\/jats:p>","DOI":"10.1136\/gut.31.8.905","type":"journal-article","created":{"date-parts":[[2007,9,18]],"date-time":"2007-09-18T17:41:31Z","timestamp":1190137291000},"page":"905-908","source":"Crossref","is-referenced-by-count":58,"title":["Needle knife papillotomy: how safe and how effective?"],"prefix":"10.1136","volume":"31","author":[{"given":"J F","family":"Dowsett","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A A","family":"Polydorou","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"D","family":"Vaira","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"L M","family":"D'Anna","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"M","family":"Ashraf","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"J","family":"Croker","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"P R","family":"Salmon","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"R C","family":"Russell","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"A R","family":"Hatfield","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"239","published-online":{"date-parts":[[1990,8,1]]},"reference":[{"key":"ref_1","first-page":"69","article-title":"Fiberduodenoscopy and endoscopic pancreatocholangiography","volume":"17","author":"Oi, I.","year":"1970","unstructured":"Oi I. 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