[1] UCSF, Proctor Fdn, San Francisco, CA USA
[2] UCSF, Rheumatol, San Francisco, CA USA
[3] Univ Texas Hlth Sci Ctr Houston, Rheumatol, Houston, TX 77030 USA
[4] NIAMSD, Clin Trials & Outcomes Branch, Bethesda, MD 20892 USA
[5] Cedars Sinai Med Ctr, Rheumatol, Los Angeles, CA 90048 USA
[6] Queensland Univ Technol, Brisbane, Qld, Australia
[7] Univ Texas Hlth Sci Ctr Houston, Clin & Translat Sci, Houston, TX 77030 USA