Funding for this research was provided by:
National Cancer Institute (HHSN261200800043C, HHSN261201000063C, HHSN261200800001E)
National Institutes of Health (P30 CA8748-50)
Received: 23 March 2018
Accepted: 18 November 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: The study was approved by the institutional review boards at the National Cancer Institute and all participating sites. All study participants provided written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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