Buttgereit Frank, Straub Rainer H, Wehling Martin, Burmester Gerd-Rüdiger
Department of Rheumatology and Clinical Immunology, Charité University Hospital, Schumannstrasse 20/21, 10117 Berlin, Germany.
Arthritis Rheum. 2004 Nov;50(11):3408-17. doi: 10.1002/art.20583.