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Diagnostic and Therapeutic Endoscopy
Volume 2012 (2012), Article ID 680963, 8 pages
http://dx.doi.org/10.1155/2012/680963
Clinical Study

Efficacy of the New Double-Layer Stent for Unresectable Distal Malignant Biliary Obstruction: A Single-Center Retrospective Study

Division of Gastroenterology and Hepatology, Toho University Omori Medical Center, 6-11-1, Omori Nishi, Ota-ku, Tokyo 143-8541, Japan

Received 13 September 2011; Revised 21 November 2011; Accepted 30 November 2011

Academic Editor: Kazuo Inui

Copyright © 2012 Ken Ito et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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