- Correspondence to Dr Sandra Ciesek, Medizinische Hochschule Hannover, Klinik für Gastroenterologie, Hepatologie und Endokrinologie, Carl-Neuberg-Str. 1, Hannover 30625, Germany;
- Received December 8, 2014
- Accepted July 10, 2015
- First published August 14, 2015.
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