[1] Brigham & Womens Hosp, 75 Francis St, Boston, MA 02115 USA
[2] Brigham & Womens Hosp, Div Rheumatol Immunol & Allergy, 75 Francis St, Boston, MA 02115 USA
[3] Brigham & Womens Hosp, Rheumatol, 75 Francis St, Boston, MA 02115 USA
[4] NHLBI, Bldg 10, Bethesda, MD 20892 USA
[5] Brigham & Womens Hosp, Rheumatol Immunol & Allergy, 75 Francis St, Boston, MA 02115 USA