Makol Ashima, Maleszewski Joseph J, Warrington Kenneth J
Division of Rheumatology, Department of Internal Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
Arthritis Care Res (Hoboken). 2012 Jun;64(6):935-40. doi: 10.1002/acr.21645. Epub 2012 Feb 15.