1. International Drug Development Institute, Louvain-la-Neuve, Belgium;
2. I-BioStat, Hasselt University, Diepenbeek, Belgium;
3. Children's Cancer Group, University of Pennsylvania School of Medicine and Children's Hospital of Philadelphia, Philadelphia, PA;
4. Children's Cancer Group, Department of Preventive Medicine, University of Southern California, Arcadia, CA;
5. Cancer and Leukemia Group B, University of Chicago, Chicago, IL;
6. Cancer and Leukemia Group B, North Shore University Hospital, New York University School of Medicine, Manhasset, NY;
7. Cancer and Leukemia Group B Statistical Center, Duke University Medical Center, Durham, NC;
8. Cancer and Leukemia Group B, The Ohio State University, Columbus, OH;
9. Acute Leukemia French Association, Centre Hospitalier de Versailles, Hôpital André Mignot, Service Hématologie et Oncologie, Le Chesnay, France;
10. Département de Biostatistique et Informatique Médicale, Hôpital Saint-Louis, Paris, France;
11. Département d' Hématologie, Institut Paoli Calmettes, Marseille, France; and
12. MedVal Scientific Information Services LLC, Skillman, NJ