Published on in Vol 8, No 1 (2022): Jan-Dec
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/36624, first published
.
1 Department of Community Medicine, Sana’a University, Sana’a, Yemen
2 Field Epidemiology Training Program, Ministry of Public Health and Population, Sana’a, Yemen