Funding for this research was provided by:
National Institute for Occupational Safety and Health (2T42OH008455)
University of Michigan Office of Research (--)
School of Public Health, University of Michigan (--)
Horace H. Rackham School of Graduate Studies, University of Michigan (--)
Article History
Received: 22 August 2018
Accepted: 18 December 2018
First Online: 10 January 2019
Ethics approval and consent to participate
: All research procedures were performed in accordance with the Declaration of Helsinki and approved by the University of Michigan Institutional Review Board (HUM00084062) and the University of Ghana Institutional Review Board at the Noguchi Memorial Institute for Medical Research (NMIMR-IRB CPN 070/13-14). All participants provided written informed consent prior to participation.
: Not applicable.
: The authors declare that they have no competing interests.
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