Funding for this research was provided by:
Division of Cancer Epidemiology and Genetics, National Cancer Institute (CA187052, CA197995)
Received: 29 December 2019
Accepted: 23 February 2020
First Online: 5 March 2020
Ethics approval and consent to participate
: Not applicable.
: All authors agree to publish this paper.
: The authors declare that they have no competing interests.