1. NRG Oncology; Clinical Trials Development Division, Department of Biostatistics and Bioinformatics Roswell Park Comprehensive Cancer Center Buffalo New York
2. Department of Biostatistics Boston University School of Public Health Boston Massachusetts
3. Division of Preventive Medicine Brigham and Women's Hospital; Harvard Medical School Boston Massachusetts
4. Department of Biostatistics and Bioinformatics Duke University Durham North Carolina
5. Department of Mathematics & Statistics Boston University Boston Massachusetts