- Correspondence to Dr Toshifumi Hibi and Dr. Tadakazu Hisamatsu, Division of Gastroenterology and Hepatology, Department of Internal Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo 160-8582, Japan; ,
- Revised July 31, 2012
- Accepted August 28, 2012
- First published September 26, 2012.
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