Funding for this research was provided by:
National Cancer Institute (T32-CA057726, P50CA180907)
Received: 6 June 2018
Accepted: 2 September 2018
First Online: 15 September 2018
Ethics approval and consent to participate
: The University of North Carolina’s institutional review board approved the study (study number 14–2011). We obtained verbal consent from the parent for each adolescent’s participation and then verbal assent from each adolescent. The UNC IRB approved the procedure for obtaining verbal consent from participants. During the call, research staff reviewed the information in the verbal assent scripts with participants, adolescents provided verbal assent over the phone, and study staff documented the assent in a log. The rationale for the waiver of written consent came from a position paper from the Society for Adolescent Medicine stating that adolescents are capable of providing informed consent for low-risk studies.
: Not applicable.
: Dr. Brewer has served as a paid expert consultant in litigation against tobacco companies. The authors declare that they have no competing interests.
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