Competing interestsThe authors declare no competing interests.
Ethics approval and consent to participateThe study was conducted in accordance with the Declaration of Helsinki and approved by the Institutional Review Board of Jimma University (Ref.
Written informed consent was obtained from all subjects.
For participants unable to read and write, the information sheet was read aloud and consent was confirmed using a fingerprint in the presence of a witness.
Consent for publicationNot applicable as no individual person’s data are presented.
Competing interests
The authors declare no competing interests.
Ethics approval and consent to participate
The study was conducted in accordance with the Declaration of Helsinki and approved by the Institutional Review Board of Jimma University (Ref. No. IHRPGD/394/2019, approved September 2019). Written informed consent was obtained from all subjects. For participants unable to read and write, the information sheet was read aloud and consent was confirmed using a fingerprint in the presence of a witness.
Consent for publication
Not applicable as no individual person’s data are presented.
