1. Lymphoma Service, Division of Hematologic Oncology, Department of Medicine, Memorial Sloan Kettering Cancer Center (MSKCC), New York, NY;
2. Department of Medicine, Weill Cornell Medical College, New York, NY; and
3. Molecular Imaging and Therapy Service, Department of Radiology, and
4. Department of Epidemiology and Biostatistics, MSKCC, New York, NY