Funding for this research was provided by:
Robert Wood Johnson Foundation (73894)
National Center for Injury Prevention and Control (R49 CE002096)
Received: 5 August 2018
Accepted: 7 November 2018
First Online: 20 December 2018
Ethics approval and consent to participate
: This study was approved by the Columbia University’s Institutional Review Board (study number: AAAQ6207).
: Not applicable.
: The authors declare that they have no competing interests.
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