- Correspondence to Professor Dr Thomas Gress, Division of Gastroenterology, Endocrinology, Infectiology and Metabolism, University Hospital Giessen and Marburg, Campus Marburg, Philipps University Marburg, Baldinger Strasse, Marburg 35043, Germany;
- Received February 3, 2015
- Revised March 19, 2015
- Accepted March 20, 2015
- First published May 20, 2015.
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