Funding for this research was provided by:
Helse Vest Regionalt Helseføretak (911847)
Text and Data Mining valid from 2018-05-29
Received: 7 June 2017
Accepted: 16 May 2018
First Online: 29 May 2018
Ethics approval and consent to participate
: Written or oral consent to participate was obtained by all participants in the study. When a participant was not able to write, oral consent was obtained as approved by the ethical committees both in Norway and Ethiopia.Reference numbers for ethical approvals:Regional Committees for Medical and Health Research Ethics in Norway, 25 August 2014: 2014/589. University of Gondar Institutional Review Board, 2 February 2015: R/C/S/V/P/05/315/2015.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.