Funding for this research was provided by:
Cancer Prevention and Research Institute of Texas (RP120348, RP100417)
Received: 19 May 2017
Accepted: 5 February 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: Not applicable. This work does not include human subjects, experiments with animals or plants.
: Not applicable.
: All authors declare that they have no competing interests.
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