1. An Unusual Cause of Biliary Obstruction After Endoscopic Sphincterotomy 
Chih-Wei Tseng, Yi-Chun Chou, Yu-Hsi Hsieh 
Gastroenterology 
Volume 142, Issue 5, Pages e1-e2 (May 2012)
DOI: /j.gastro
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2. Gastroenterology 2012 142, e1-e2DOI: (10.1053/j.gastro.2011.10.017)
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3. Gastroenterology 2012 142, e1-e2DOI: (10.1053/j.gastro.2011.10.017)
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