Funding for this research was provided by:
Bureau of Tobacco and Chronic Disease (ADHS11-007339, ADHS13-026130:5, ADHS16-106672)
National Cancer Institute (P30 CA023074)
Received: 29 March 2018
Accepted: 1 August 2018
First Online: 10 August 2018
Ethics approval and consent to participate
: Since the study used de-identified client data, the study protocol was reviewed and deemed exempt by the University’s Institutional Review Board. All participating subjects provided verbal consent obtained over the phone.
: Not Applicable.
: The authors declare that they have no competing interests.
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