Funding for this research was provided by:
National Cancer Institute (UG1 CA189961 Supplement, DP2 CA195765, UG1 CA189961, K07 CA168886, K07 CA187546, P30 CA16056)
Breast Cancer Research Foundation (No number)
National Cancer Institute (U24 CA232979)
Received: 14 October 2018
Accepted: 28 February 2019
First Online: 12 March 2019
Ethics approval and consent to participate
: This study was approved by the Institutional Review Board of each NCORP, the URCC NCORP Research Base, and Roswell Park Comprehensive Cancer Center; all participants provided informed consent.
: No individual-level data are included in the manuscript.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.