Brandt K D, Smith G N, Simon L S
Indiana University School of Medicine, and Indiana University Multipurpose Arthritis and Musculoskeletal Diseases Center, Indianapolis 46202, USA.
Arthritis Rheum. 2000 Jun;43(6):1192-203. doi: 10.1002/1529-0131(200006)43:6<1192::AID-ANR2>3.0.CO;2-L.