Funding for this research was provided by:
NORAD (Norwegian Agency for Development Cooperation) under the NORHED-Program (ETH-13/0024)
Received: 7 October 2019
Accepted: 31 March 2020
First Online: 9 April 2020
Ethics approval and consent to participate
: The study protocol was approved by the Institutional Review Boards of the University of Oslo and Jimma University, and the ethical review board of Oromia Regional Health Bureau. Written consent of participation was obtained from eligible participants after they were provided with an information sheet.
: Not applicable.
: The authors declare that they have no competing interests.