Funding for this research was provided by:
Norges Forskningsråd (249686)
Text and Data Mining valid from 2019-09-27
Received: 31 January 2019
Accepted: 23 July 2019
First Online: 27 September 2019
Ethics approval and consent to participate
: The study received ethical clearance from Regional Ethical Committee Western Norway, Norway (2017/1191) and data management clearance from Norwegian Centre for Research Data (57089/3/00SIRH); ethical clearance from the University of Zambia Biomedical Research Ethics Committee (009-07-17) and National Health Research Authority in Zambia (MH/101/23/10/1 and research clearance and registration from the University of Dar es Salaam (CoSS- SO18011). In Ethiopia the research was carried out following social science research procedures at Addis Ababa University. Informed consent was given by all participants before being interviewed for the study.
: Not applicable.
: The authors declare that they have no competing interests.