- Correspondence to Professor Thomas Dörner, Department of Medicine/Rheumatology and Clinical Immunology, Charité Universitätsmedizin Berlin &DRFZ Berlin, Chariteplatz 01, Berlin 10117, Germany;
- Received January 11, 2016
- Revised February 17, 2016
- Accepted February 18, 2016
- First published March 8, 2016.
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