- Correspondence to Professor Gabriela Riemekasten, Department of Rheumatology, University Hospital Schleswig-Holstein—Campus Lübeck, Ratzeburger Allee 160, Lübeck 23538, Germany;
- Received April 13, 2015
- Revised July 30, 2015
- Accepted August 12, 2015
- First published August 31, 2015.
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