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Article History

Received: 10 March 2017

Accepted: 12 January 2018

First Online: 5 March 2018

Ethics approval and consent to participate

: The parent survey from which this secondary analysis was conducted was approved by the Centers for Disease Control and Prevention’s (CDC) Center for Global Health’s Human Subjects Research Office. The requirement for signed informed consent was waived, but each participant was read a consent or assent form addressing his/her rights and welfare as a participant, and verbal consent or assent was obtained from each participant.

: Since the study was conducted as a secondary analysis of the parent survey, and because results are presented in aggregate, consent for publication is not applicable.

: All authors declare that they have no competing interests; no support from any organization for the submitted work; no financial relationships with any organizations that might have an interest in the submitted work in the previous 3 years; no other relationships or activities that could appear to have influenced the submitted work.

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