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Endoscopic papillary balloon dilation after sphincterotomy for difficult choledocholithiasis: A case-controlled study |
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| Authors: | Bruno Rosa Pedro Moutinho Ribeiro Ana Rebelo António Pinto Correia José Cotter |
| Affiliation: | Bruno Rosa, Pedro Moutinho Ribeiro, Ana Rebelo, António Pinto Correia, José Cotter, Department of Gastroenterology, Alto Ave Hospital Center, 4835-044 Guimarães, Portugal |
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