Received: 1 December 2018
Accepted: 21 May 2019
First Online: 25 June 2019
Ethics approval and consent to participate
: The study was approved by the College of Medicine and Health Sciences Research and Ethical review committee of the University of Gondar. A formal letter indicating the ethical approval was obtained and submitted to Denbiya district woreda health offices and health centers coordinator. Consent was obtained from each study participant. Personal identifiers like name and phone number were not used.
: Not applicable.
: The authors declare that they have no competing interests.