- Correspondence to Professor Jonas Rosendahl, Department of Internal Medicine, Neurology and Dermatology Division of Gastroenterology and Rheumatology, University Clinic of Leipzig Liebigstraße 20, 04103 Leipzig, Germany;
- Received May 5, 2017
- Revised June 16, 2017
- Accepted June 24, 2017
- First published July 28, 2017.
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