Funding for this research was provided by:
Norwegian Research Council
Received: 7 June 2018
Accepted: 25 August 2019
First Online: 5 September 2019
Ethics approval and consent to participate
: Ethical approval was granted by the Initial Review Board and by the Institutional Review Board at Addis Ababa University, College of Health Sciences. Ethical approval was applied for at REK (Regional Ethical Committee of Norway), but the study was considered to be outside their mandate. All participants and the researcher signed a consent form informing about the study, confidentiality, anonymity and the right to withdraw at any point in the study.
: Consent for publication was obtained from all participants in the study.
: The authors declare that they have no competing interests.