Received: 12 March 2021
Accepted: 18 June 2021
First Online: 29 June 2021
: FLASHE was reviewed and approved by the US Government’s Office of Management and Budget, the NCI Special Studies Institutional Review Board, and Westat’s Institutional Review Board. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. All participants provided informed consent (parent informed consent and parent informed consent for adolescent) and informed assent (adolescent) prior to study enrollment.
: Not applicable.
: The authors declare that they have no competing interests.