Funding for this research was provided by:
National Institutes of Health (CA193466, HG007538)
Received: 5 July 2017
Accepted: 23 August 2017
First Online: 18 September 2017
: Not applicable in this study.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.