- Correspondence to Professor Thomas Dörner, CC12 Department of Medicine, Rheumatology and Clinical Immunology, Charité—University Medicine Berlin, Chariteplatz 1, Berlin 10117, Germany;
- Received September 21, 2012
- Revised November 23, 2012
- Accepted December 2, 2012
- First published December 19, 2012.
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