- Correspondence to Professor Jean-Frédéric Colombel, The Dr Henry D Janowitz Division of Gastroenterology, Icahn School of Medicine at Mount Sinai, 1 Gustave Levy Place, New York, NY 10029, USA;
- Received January 24, 2013
- Revised March 15, 2013
- Accepted March 20, 2013
- First published October 8, 2013.
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