1. Fred Hutchinson Cancer Research Center, Clinical Research Division, Seattle, WA;
2. University of Washington, Seattle, WA;
3. Fred Hutchinson Cancer Research Center, Public Health Sciences Division, Seattle, WA;
4. SWOG Statistical Center, Seattle, WA;
5. Children's Oncology Group, Arcadia, CA;
6. Hematologics, Inc., Seattle, WA;
7. St. Jude Children's Research Hospital, Pathology Division, Memphis, TN;
8. University of Minnesota Medical Center-Fairview, Minneapolis, MN;
9. Children's Hospital of Philadelphia, Department of Pediatrics, Division of Oncology, Philadelphia, PA;
10. Seattle Genetics, Inc., Seattle, WA;
11. Children's Mercy Hospitals and Clinics, Kansas City, MO; and
12. University of Southern California, Los Angeles, CA