Received: 15 February 2021
Accepted: 8 December 2021
First Online: 18 December 2021
: Ethics approval was obtained from the institutional review board of St Paul’s Hospital Millennium Medical College, Addis Ababa. The study was also evaluated and approved by the Data Protection Official at the Norwegian Centre for Research Data (ref. 53104). Furthermore, the study was evaluated by the research ethics committee of the Southeastern Norway health region and found to be exempt from substantial evaluation (2016/875/REK sør-øst C). Participants were informed orally and in writing and gave written informed consent. The study was carried out in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors declare that they have no competing interests.