1. Division of Hematology/Oncology, Northwestern University, Chicago, IL;
2. Division of Laboratory Genetics, Mayo Clinic, Rochester, MN;
3. Leukemia Service, Memorial Sloan-Kettering Cancer Center, New York, NY;
4. Department of Oncology, Montefiore Medical Center, Bronx, NY;
5. Division of Hematology/Oncology/Bone Marrow Transplantation, Children’s Mercy Hospitals and Clinics, Kansas City, MO;
6. Division of Hematology/Oncology, Children's Hospital of Michigan, Wayne State University, Detroit, MI;
7. The Children’s Hospital of Philadelphia, Division of Hematology, University of Pennsylvania School of Medicine, Philadelphia, PA; and
8. Department of Pathology, University of Michigan Medical School, Ann Arbor, MI