[1] Pfizer Inc, New York, NY USA
[2] Pfizer, New York, NY USA
[3] Duke Clin Res Inst, Durham, NC USA
[4] Duke Univ, Durham, NC 27706 USA
[5] Univ Minnesota, Minneapolis, MN 55455 USA
[6] Boston Childrens Hosp, Boston, MA USA
[7] Univ North Carolina, Chapel Hill, NC 27515 USA
[8] FASTER Med, Birmingham, W Midlands, England
[9] Childhood Arthrit & Rheumatol Res Alliance, Washington, DC USA