Received: 2 November 2018
Accepted: 11 September 2019
First Online: 11 October 2019
Ethics approval and consent to participate
: This study was reviewed and approved by Research Ethical Review Committee at Department of Medical Laboratory Science, Addis Ababa University, AHRI/ALERT Ethics Review committee and the Ethiopian National Research Ethical Review Committee. The purpose of the study, type and amount of specimen needed were explained to the participants and written informed consent was obtained from all study participants recruited in this study.
: Not applicable.
: The authors declare that they have no competing interests.