Published on in Vol 4, No 9 (2020): September

Preprints (earlier versions) of this paper are available at https://preprints.jmir.org/preprint/19138, first published .
Phone Calls to Retain Research Participants and Determinants of Reachability in an African Setting: Observational Study

Phone Calls to Retain Research Participants and Determinants of Reachability in an African Setting: Observational Study

Phone Calls to Retain Research Participants and Determinants of Reachability in an African Setting: Observational Study

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