1. Gehr Family Center for Leukemia Research, Hematologic Malignancies and Stem Cell Transplantation Institute, City of Hope National Medical Center, Duarte, CA;
2. Division of Hematology-Oncology, University of Alabama at Birmingham, Birmingham, AL;
3. College of Medical, Veterinary, & Life Sciences, Institute of Cancer Sciences, University of Glasgow, United Kingdom; and
4. Department of Pathology, City of Hope National Medical Center, Duarte, CA