Funding for this research was provided by:
National Institutes of Health (R01 EB020366, R01 EB027898)
Cancer Prevention and Research Institute of Texas (RP160661, RP130109)
Article History
Received: 5 September 2019
Accepted: 13 November 2019
First Online: 12 December 2019
Ethics approval and consent to participate
: This is a retrospective study under a departmental umbrella protocol approved by the internal review board (IRB).
: The authors declare that they have no competing interests.