Published on in Vol 5, No 3 (2019): Jul-Sep
Preprints (earlier versions) of this paper are
available at
https://preprints.jmir.org/preprint/14215, first published
.
1 Yemen Field Epidemiology Training Program, Sa'adah, Yemen
2 Faculty of Medicine and Health Sciences, Sana'a, Yemen
3 Faculty of Medicine, Jordan University of Science & Technology, Irbid, Jordan