1. Department of Hematology, Aberdeen Royal Infirmary, Aberdeen, UK
2. Department of Investigational Cancer Therapeutics, The University of Texas M. D. Anderson Cancer Center, Houston, Texas
3. Division of Hematology and Medical Oncology, Oregon Health and Science University/Knight Cancer Institute, Portland, Oregon
4. Joe Arrington Cancer Research and Treatment Center, Lubbock, Texas
5. Texas Tech University Health Sciences Center, Lubbock, Texas
6. Section of Benign Hematology, The University of Texas M. D. Anderson Cancer Center, Houston, Texas