Acknowledgements
The authors wish to gratefully acknowledge the important contributions of the late Dr. Stephen H. Petersdorf to SWOG and to study S0106.
Disclosure statement
The authors report no conflict of interest.
Data availability statement
The policies and procedures for requesting SWOG Cancer Research Network data are available at https://www.swog.org/sites/default/files/docs/2019-12/Policy43_0.pdf.