Funding for this research was provided by:
Addis Ababa University (7000)
Received: 20 February 2018
Accepted: 25 June 2018
First Online: 9 July 2018
Ethics approval and consent to participate
: The study obtained ethical approval from Departmental Research and Ethics Review Committee (DRERC) of the Department of Medical Laboratory Sciences, Addis Ababa University (Protocol number: DRERC 092/14/MLS) and Institutional Review Board of St Paul’s Hospital Millennium Medical College. Informed written consent was obtained from each voluntary participant prior to enrolment.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.