1. Montefiore Medical Center, Albert Einstein College of Medicine, Bronx, New York
2. Dana Farber Cancer Institute, Boston, Massachusetts
3. Loyola University Medical Center, Maywood, Illinois
4. Aurora Cancer Center (formerly Vince Lombardi Cancer Clinic), Two Rivers, Wisconsin
5. Indiana University School of Medicine, Indianapolis
6. Northwestern University, Chicago, Illinois
7. (now at) Wake Forest University Health Service, Winston Salem, North Carolina
8. (now at) University of Texas Health Science Center, San Antonio
9. Cancer Trials Ireland, Dublin, Ireland
10. Instituto Nacional de Enfermedades Neoplasicas, Lima, Peru
11. Cancer Center of Kansas, Wichita, Kansas
12. Fox Valley Hematology and Oncology, Appleton, Wisconsin
13. Vanderbilt University, Nashville, Tennessee
14. Rutgers Cancer Institute of New Jersey, New Brunswick, New Jersey
15. University of Pittsburgh, Pittsburgh, Pennsylvania
16. Mayo Clinic, Jacksonville, Florida
17. University of Hawaii Cancer Center, Honolulu, Hawaii
18. McGill University, Montreal, Canada
19. Universite Laval, Quebec, Canada
20. University of Michigan, Ann Arbor
21. University of North Carolina, Chapel Hill
22. the Massey Cancer Center, Virginia Commonwealth University School of Medicine, Richmond
23. Duke University Medical Center, Durham, North Carolina
24. (now at) University of Maryland School of Medicine, Baltimore
25. Emory University, Atlanta, Georgia
26. National Institutes of Health, National Cancer Institute, Bethesda, Maryland
27. NSABP Pathology Office, Pittsburgh, Pennsylvania
28. (now at) Yonsei University College of Medicine, Seoul, South Korea
29. Washington University, St Louis, Missouri
30. (now at) Baylor College of Medicine, Houston, Texas
31. Indiana University Hospital, Indianapolis
32. (now at) Stanford University, Stanford, California