- Correspondence to Dr Peter J Kahrilas, Division of Gastroenterology and Hepatology, Department of Medicine, Northwestern University, Feinberg School of Medicine, 676 N. St. Clair Street, 14th Floor, Chicago, IL 60611, USA;
- Received December 7, 2015
- Accepted December 17, 2015
- First published January 7, 2016.
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