Funding for this research was provided by:
Duke Global Health Institute, Duke University (Student Research Training Program)
Text and Data Mining valid from 2020-03-21
Received: 15 September 2019
Accepted: 13 March 2020
First Online: 21 March 2020
Ethics approval and consent to participate
: All participants provided verbal informed consent. Approval of the use of verbal-only consent and ethical permission to conduct the study were obtained from the Institutional Review Board Committee of Duke University.
: Not applicable.
: The authors declare that they have no competing interests.