1. University of Florida, Gainesville, FL
2. NSABP Biostatistical Center, and University of Pittsburgh Graduate School of Public Health, Department of Biostatistics, Pittsburgh, PA
3. NSABP, Pittsburgh, PA
4. NSABP, and UF Health Cancer Center-Orlando Health, Orlando, FL
5. NSABP, and Helen F. Graham Cancer Center & Research Institute, Newark, DE
6. NSABP, and Glendale Memorial Hospital, Glendale, CA
7. NSABP, and Allegheny Cancer Center at Allegheny General Hospital, Pittsburgh, PA