Funding for this research was provided by:
National Institute for Occupational Safety and Health (5R01OH009469)
Received: 11 January 2018
Accepted: 6 March 2018
First Online: 16 April 2018
Ethics approval and consent to participate
: The study design and methods were approved by the University of Arizona Institutional Review Board. All research participants from the participatory aspects of the study provided informed consented.
: All authors provide full consent for publishing materials presented within this manuscript.
: The authors declare that they have no competing interests.