Funding for this research was provided by:
National Institutes of Health (5RO1DA035158-04)
Received: 23 May 2017
Accepted: 10 January 2018
First Online: 16 January 2018
: The study protocol received ethical approval from the Institutional Review Boards (IRBs) of McGill University, the Morehouse School of Medicine (the IRB of record for the American Cancer Society), the University of Ottawa, and the University of Zambia. All participants gave informed consent for this study.
: None required.
: None declared.
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