1. Emory University School of Medicine; Atlanta Georgia
2. Ohio State University College of Medicine; Columbus
3. University of Texas Southwestern Medical School, Dallas, and Children's Mercy Hospitals and Clinics; Kansas City Missouri
4. Children's Mercy Hospitals and Clinics; Kansas City Missouri
5. University of Colorado School of Medicine; Aurora
6. University of Wisconsin College of Medicine; Madison
7. Pacific Arthritis Center Medical Group; Santa Maria California
8. Robert Wood Johnson Medical School; New Brunswick New Jersey
9. Boston Children's Hospital and Brigham and Women's Hospital; Boston Massachusetts
10. The Hospital for Sick Children; Toronto, Ontario Canada
11. University of Iowa Carver College of Medicine; Iowa City