1. Massachusetts General Hospital; Boston
2. Mayo Clinic, Rochester; Minnesota
3. University of Pennsylvania School of Medicine; Philadelphia
4. Johns Hopkins University; Baltimore Maryland
5. Hospital for Special Surgery; New York New York
6. Cleveland Clinic; Cleveland Ohio
7. University of Groningen and University Medical Center Groningen; Groningen The Netherlands
8. Duke University Medical Center; Durham North Carolina
9. Immune Tolerance Network; South San Francisco California
10. National Institute of Allergy and Infectious Diseases, NIH; Bethesda Maryland
11. Rho; Chapel Hill North Carolina
12. FDA; Silver Spring Maryland
13. Genentech; South San Francisco California
14. Boston University School of Medicine; Boston Massachusetts