[1] Univ Michigan, Div Rheumatol, Ann Arbor, MI 48109 USA
[2] Univ Michigan, Taubman Hlth Sci Lib, Ann Arbor, MI 48109 USA
[3] Emory Univ, Atlanta, GA 30322 USA
[4] Rochester Gen Hlth Syst, Rochester, NY USA
[5] Univ Calif Los Angeles, David Geffen Sch Med, Los Angeles, CA 90095 USA
[6] VAMC UCSD, La Jolla, CA USA