- Correspondence to Dr C Janneke van der Woude, Department of Gastroenterology and Hepatology, Erasmus MC Rotterdam, ‘s Gravendijkwal 230, Rotterdam 3015 CE, The Netherlands;
- Received January 9, 2013
- Revised February 22, 2013
- Accepted February 22, 2013
- First published March 23, 2013.
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