1. Cincinnati Children's Hospital Medical Center and University of Cincinnati; Cincinnati Ohio
2. Wake Forest University School of Medicine; Winston-Salem North Carolina
3. Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
4. Children's Mercy-Kansas City; Kansas City Missouri
5. University of Utah; Salt Lake City
6. National Jewish Health and University of Colorado; Denver
7. Levine Children's Specialty Center; Charlotte North Carolina
8. German Center for Pediatric and Adolescent Rheumatology; Garmisch-Partenkirchen Germany
9. Boston Children's Hospital and Brigham and Women's Hospital and Harvard Medical School; Boston Massachusetts
10. Emory University School of Medicine; Atlanta Georgia
11. Texas Scottish Rite Hospital for Children and UT Southwestern Medical Center; Dallas Texas
12. DuPont Children's Hospital; Wilmington Delaware
13. Seattle Children's Hospital and Research Institute; Seattle Washington
14. Texas Scottish Rite Hospital for Children, McDermott Center for Human Growth and Development, and UT Southwestern Medical Center; Dallas Texas
15. University of Cincinnati; Cincinnati Ohio