Funding for this research was provided by:
Centers for Disease Control and Prevention (R01-CEO02524)
Article History
Received: 25 March 2019
Accepted: 3 May 2019
First Online: 11 May 2019
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: This study was approved by (board and reference number masked for review). All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional research committee (board masked for review) and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards.
: For participants under 18, informed consent was obtained from a parent/guardian for all participants. In addition, all participants under 18 assented to the study. For participants over 18, informed consent was obtained for all participants.