- Correspondence to Dr Roman-Ulrich Müller, Department II of Internal Medicine and Center for Molecular Medicine Cologne, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Cologne, Germany; ; Dr Dirk Nierhoff, ;
- Received October 18, 2018
- Revised December 26, 2018
- Accepted January 1, 2019
- First published February 8, 2019.
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