[1] Univ Penn, Rheumatol, Philadelphia, PA 19104 USA
[2] Vanderbilt Univ, 221 Kirkland Hall, Nashville, TN 37235 USA
[3] Kansas Univ, Med Ctr, Div Allergy Clin Immunol & Rheumatol, Dept Internal Med, Kansas City, KS USA
[4] Vanderbilt Univ, Internal Med, 221 Kirkland Hall, Nashville, TN 37235 USA
[5] Vasculitis Fdn, Kansas City, MO USA
[6] Univ Penn, Informat Technol, Philadelphia, PA 19104 USA
[7] Univ Kansas, Rheumatol, Kansas City, KS USA
[8] Univ Kansas, Informat Technol, Kansas City, KS USA
[9] Univ Kansas, Med Ctr, Div Allergy Clin Immunol & Rheumatol, Allergy Clin Immunol & Rheumatol,Dept Internal Me, Kansas City, KS 66103 USA
[10] Univ Penn, Div Rheumatol, Penn Vasculitis Ctr, Philadelphia, PA 19104 USA
[11] Temple Univ, Rheumatol, Philadelphia, PA 19122 USA
[12] Univ Penn, Div Rheumatol, Philadelphia, PA 19104 USA