[1] Brigham & Womens Hosp, Rheumatol Immunol & Allergy, 75 Francis St, Boston, MA 02115 USA
[2] Harvard Med Sch, Boston, MA USA
[3] Beth Israel Deaconess Med Ctr, Boston, MA 02215 USA
[4] Brigham & Womens Hosp, Rheumatol, 75 Francis St, Boston, MA 02115 USA
[5] Brigham & Womens Hosp, Div Pharmacoepidemiol & Pharmacoecon, 75 Francis St, Boston, MA 02115 USA
[6] Brigham & Womens Hosp, Div Rheumatol, 75 Francis St, Boston, MA 02115 USA
[7] Brigham & Womens Hosp, Div Cardiovasc Med, 75 Francis St, Boston, MA 02115 USA