1. Children's Hospital Oakland Research Institute; Oakland; CA; USA
2. Roche Molecular Systems; Pleasanton; CA; USA
3. Georgetown University Medical Center; Washington; DC; USA
4. National Marrow Donor Program; Minneapolis; MN; USA
5. Anthony Nolan Research Institute; London; UK
6. DKMS German Bone Marrow Donor Center; Tübingen; Germany
7. Institute of Medical Biology, Chinese Academy of Medical Sciences & Peking Union Medical College; Kunming; China
8. St. Jude Children's Research Hospital; Memphis; TN; USA