Funding for this research was provided by:
AAA Foundation for Traffic Safety (PG005418)
Received: 8 October 2019
Accepted: 10 June 2020
First Online: 3 August 2020
Ethics approval and consent to participate
: IRB approval was obtained at each study site.
: Not applicable.
: LH and CD are editorial board members and GL is Editor-in-Chief of Injury Epidemiology. They were not involved in the peer-review or handling of the manuscript. The authors have no other competing interests to disclose.