1. Yale University School of Medicine, New Haven, Connecticut
2. Hematology Research Center, Moscow, Russia
3. Hôpital La Rabta, Tunis, Tunisia
4. Mount Sinai Hospital, Toronto, Ontario, Canada
5. Rabin Medical Center, Petach Tikvah, and Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
6. University of Kansas Medical Center, Kansas City
7. Hôtel-Dieu de France University Hospital, Beirut, Lebanon
8. The Royal Free Hospital, London, England
9. University of California, San Francisco, School of Medicine, San Francisco
10. New York University School of Medicine, New York, New York
11. Clinical Center of Serbia, University of Belgrade School of Medicine, Belgrade, Serbia
12. Jewish General Hospital, Montreal, Quebec, Canada
13. Icahn School of Medicine at Mount Sinai Hospital, New York, New York
14. Christian Medical College, Vellore, India
15. University Hospital Alexandrovska, Sofia, Bulgaria
16. OCA Hospital, Monterrey, Mexico
17. Emory University, Atlanta, Georgia
18. Hospital de San Jose-Fundacion Universitaria de Ciencias de la Salud San Jose, Bogota, Colombia
19. Genzyme, Cambridge, Massachusetts