Received: 20 November 2019
Accepted: 26 February 2020
First Online: 28 April 2020
Ethics approval and consent to participate
: The study was approved by Institutional Review Board of Bahir Dar University (IHB#092/18–04). Permission was obtained in West Gojjam Zone and each woreda administrators. Written consent (fingerprint for those who could not read and write) was secured from the study participants. Confidentiality was maintained throughout the study. The trial was registered in Clinical Trials.gov (NCT03627156).
: Not applicable.
: The authors declare that they have no competing interests.