1. Department of Medical Social Sciences Northwestern University, Feinberg School of Medicine Chicago Illinois
2. Dana‐Farber Cancer Institute Boston Massachusetts
3. ECOG‐ACRIN Biostatistics Center Boston Massachusetts
4. Montefiore Medical Center New York New York
5. University of Wisconsin Madison Wisconsin
6. University of Michigan Comprehensive Cancer Center Ann Arbor Michigan
7. Center for Statistical Sciences Brown University School of Public Health Providence Rhode Island
8. Department of Epidemiology Brown University School of Public Health Providence Rhode Island
9. Juravinski Cancer Center at Hamilton Health Sciences Hamilton Ontario Canada
10. Stanford Cancer Institute Palo Alto California
11. Wake Forest University Health Sciences Winston‐Salem North Carolina