1. Albert Einstein Cancer Center, Bronx, NY;
2. Division of Hematological Oncology, Memorial Sloan-Kettering Cancer Center and Weill Cornell Medical College, New York, NY;
3. Department of Biostatistics, University of Arkansas, Little Rock, AR;
4. Groupe d'Etude des Lymphomes de l'Adulte (GELA), France;
5. Adult Lymphoma Program, Division of Hematology-Oncology, University of California, San Francisco, CA;
6. ICO-Hospital Germans Trias i Pujol, Jose Carreras Research Institute and PETHEMA Group, Badalona, Spain;
7. Department of Medical Oncology, National Cancer Institute, Aviano, Italy;
8. Private Practice for Hematology and Oncology, Bremen, Germany;
9. Departments of Clinical Immunology, Hopital St. Louis, Assistance Publique-Hopitaux de Paris, Paris, France;
10. Service de medecine interne et d'immunologie, Hopital Antoine Beclere, Clamart, France;
11. Metabolism Branch and Clinical Investigations Branch, National Cancer Institute, Bethesda, MD;
12. Department of Medicine, University Hospital Cologne, Cologne, Germany;
13. Division of Oncology, Washington University, St. Louis, MO; and
14. Mary Babb Randolph Cancer Center, West Virginia University, Morgantown, WV