[1] Loma Linda Univ, Rheumatol, Loma Linda, CA 92350 USA
[2] Univ Nebraska Med Ctr, Sect Rheumatol, Omaha, NE USA
[3] Boston Univ, Boston, MA 02215 USA
[4] Univ Florida, Ponte Vedra Beach, FL USA
[5] Arthrit Rheumat & Back Dis Associates, Voorhees, NJ USA
[6] John Muir Hosp, Walnut Creek, CA USA
[7] San Antonio Uniformed Serv, San Antonio, TX USA
[8] NYU Langone Med Ctr, NYU Sch Med, Dept Med, New York, NY USA
[9] Harvard Med Sch, Massachusetts Gen Hosp, Rheumatol Allergy & Immunol, Boston, MA USA