1. 1Department of Hematology, Hospital Universitario Virgen del Rocío, Seville Biomedicine Institute (IBiS/CSIC), University of Seville, Seville, Spain.
2. 2Utah Blood and Marrow Transplant Program, Division of Hematology and Hematologic Malignancies, Huntsman Cancer Institute, University of Utah, Salt Lake City, UT.
3. 3Hematopoietic Stem Cell Transplantation Unit, Hematology Department, Institute of Hematology and Oncology, IDIBAPS, Josep Carreras Research Institute, Hospital Clínic, Barcelona, Spain.
4. 4Department of Hematology, Hospital Universitario Marqués de Valdecilla, Santander, Spain.
5. 5Department of Hematology, Hospital Clínico Universitario de Salamanca (CAUSA/IBSAL), Salamanca, Spain.
6. 6Clinical Research Division, Fred Hutchinson Cancer Center, Seattle, WA.
7. 7Division of Hematologic Malignancies and Cellular Therapy, Department of Medicine, Duke University School of Medicine, Duke Cancer Institute, Durham, NC.