Funding for this research was provided by:
Received: 23 January 2018
Accepted: 16 January 2019
First Online: 28 January 2019
Ethics approval and consent to participate
: This study was approved by the Zambia National Health Research Authority and the institutional review boards at Macha Research Trust and the University of Georgia. We conducted analysis of anonymized routinely collected program data, hence all the institutional review boards waived informed consent.
: Not applicable.
: The authors declare that they have no competing interests.
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