Funding for this research was provided by:
National Cancer Institute (R25-CA57712)
Agency for Healthcare Research and Quality (R01-HS018956)
Cancer Prevention and Research Institute of Texas (RP130051)
Received: 5 October 2017
Accepted: 21 November 2018
First Online: 4 December 2018
Ethics approval and consent to participate
: The study was reviewed by the Institutional Review Board at the University of Texas Health Science Center at Houston. It was determined to be a retrospective analysis of publicly available, de-identified data and was determined to be exempt from requiring written informed consent.
: Not applicable. No individual person’s data is included.
: The authors declare that they have no competing interests.
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