1. Center for International Blood and Marrow Transplant Research, Minneapolis, MN;
2. Center for International Blood and Marrow Transplant Research, Division of Hematology and Oncology, Department of Medicine, Medical College of Wisconsin, Milwaukee, WI;
3. Center for International Blood and Marrow Transplant Research, Division of Biostatistics, Medical College of Wisconsin, Milwaukee, WI;
4. German National Bone Marrow Registry, Ulm, Germany;
5. National Cord Blood Program, New York Blood Center, New York, NY;
6. National Marrow Donor Program, Minneapolis, MN;
7. Fred Hutchinson Cancer Research Center, Seattle, WA; and
8. Department of Oncology, Georgetown University, Washington, DC