- Correspondence to Dr Mitsuhiro Fujishiro, Department of Endoscopy and Endoscopic Surgery, Graduate School of Medicine, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan;
- Received April 26, 2014
- Revised August 27, 2014
- Accepted September 18, 2014
- First published October 9, 2014.
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