- Correspondence to Professor Josef S Smolen, Division of Rheumatology, Department of Medicine 3, Medical University of Vienna, Waehringer Guertel 18-20, Vienna A-1090, Austria;
- Received April 10, 2015
- Revised August 7, 2015
- Accepted August 12, 2015
- First published August 28, 2015.
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- Data supplement 1 - Online supplement
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