1. Laboratory of Pathology, CCR, NCI, NIH, Bethesda, MD, USA;
2. Department of Clinical Pathology, Faculty of Medicine, Mansoura University, Mansoura, Egypt;
3. Myeloma Service, Department of Medicine, Memorial Sloan-Kettering Cancer Center, New York, NY, USA;
4. Biostatistics and Data Management Section, CCR, NCI, NIH, Bethesda, MD, USA;
5. Hematology Service, Department of Laboratory Medicine, CC, NIH, Bethesda, MD, USA;
6. Hematopathology Laboratory, Tata Memorial Hospital, Mumbai, India;
7. Laboratory of Pathology, CCR, NCI, NIH, Bethesda, MD, USA