Received: 1 March 2021
Accepted: 15 June 2021
First Online: 26 June 2021
: This project was approved by the independent ethics committee of the Venezuelan National Bioethics Center (Reference number: CIBI-CENABI-04/2020), and the MSc Research Ethics Committee at the London School of Hygiene and Tropical Medicine (Reference number: 21868).
: Not applicable.
: The authors declare no conflict of interest.