- Correspondence to Professor J-F Colombel, The Dr Henry D Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, One Gustave L Levy Place, Box 1069, New York, NY 10029, USA;
- Received June 25, 2013
- Revised July 15, 2013
- Accepted July 16, 2013
- First published July 31, 2013.
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