1. Division of Hematology,
2. The Comprehensive Cancer Center, and
3. Department of Molecular Virology, Immunology and Cancer Genetics, The Ohio State University, Columbus, OH;
4. Hematological Department, Cliniques Universitaires Saint-Luc, Université Catholique de Louvain, Brussels, Belgium;
5. Alliance for Clinical Trials in Oncology Statistics and Data Center; and
6. Department of Leukemia, University of Texas MD Anderson Cancer Center, Houston, TX