Funding for this research was provided by:
City of Seattle
Received: 13 September 2018
Accepted: 9 June 2019
First Online: 9 July 2019
Ethics approval and consent to participate
: The University of Washington School of Public Health Institutional Review Board determined that this survey was exempt under category 2. Thus, this research is exempt from the federal human subjects regulations and need for consent did not apply. Note that information was obtained in such a manner that subjects could not be identified by the research team<i>.</i>
: Not applicable.
: The authors declare that they have no competing interests.