Funding for this research was provided by:
National Cancer Institute (Career Development Award)
University of Texas MD Anderson Cancer Center (Institutional Research Grant)
National Institutes of Health (U24 CA143883)
Received: 2 January 2018
Accepted: 18 July 2018
First Online: 31 July 2018
Ethics approval and consent to participate
: This study was approved by the institutional review board at the University of Texas MD Anderson Cancer Center. The need for consent was waived because of the retrospective nature of the study.
: Not applicable.
: The authors declare that they have no competing interests.
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