- Correspondence to Clara Dees, Department of Internal Medicine 3 for Rheumatology and Immunology, Friedrich-Alexander-University Erlangen-Nürnberg (FAU), University Hospital of Erlangen, Erlangen 91054, Germany;
- Received August 21, 2017
- Revised January 4, 2018
- Accepted January 16, 2018
- First published February 3, 2018.
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