Received: 16 December 2019
Accepted: 19 July 2020
First Online: 28 July 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from the Department of Public Health, St. Paul’s Hospital. Millennium Medical College, Addis Ababa, Ethiopia, and submitted to Amhara Public Health. Institute (APHI); research and technology transfer directorate. Permission letter was secured from APHI which states its number as (APHI/ 5011, 06/02/11). The purposes and the importance of the study were explained to PHEM directorate. Confidentiality was assured at all levels of the study using password protected computer and through deleting all identifiers.
: Not applicable. This study does not contain any individual or personal data.
: The authors declare that they have no competing interests.