Funding for this research was provided by:
NIH/Fogarty International Center Global Infectious Diseases Grant (D43TW009127; T32 AI074492 and UL1 TR002378)
Text and Data Mining valid from 2020-05-06
Received: 1 August 2019
Accepted: 27 April 2020
First Online: 6 May 2020
Ethics approval and consent to participate
: The study was ethically reviewed and approved by Addis Ababa University, College of Natural Sciences Research Ethics Review Board, Ethiopia; Reference No. CNSDO/324/08/2016. The objectives and procedures of the study were explained to students and they were included in the study after obtaining written informed consent.
: Not applicable.
: The authors declare that they have no competing interests.