- Correspondence to Prof Dr Bernhard Hellmich, Klinik für Innere Medizin, Rheumatolgie und Immunologie, Medius Kliniken, Eberhard Karls Universität Tübingen, 73230 Kirchheim-Teck, Germany;
- Received May 6, 2019
- Revised June 10, 2019
- Accepted June 10, 2019
- First published July 3, 2019.
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