About the Authors

Solomon Mekonnen Abebe

solomekonnen@yahoo.com

Affiliation Institute of Public health, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia

Yemane Berhane

Affiliation Addis Continental Institute of Public Health, Addis Ababa, Ethiopia

Alemayehu Worku

Affiliation School of Public Health, Addis Ababa University, Addis Ababa, Ethiopia

Assefa Getachew

Affiliation School of Medicine, College of Medicine and Health Sciences, University of Gondar, Gondar, Ethiopia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: SMA YB AW. Performed the experiments: SMA. Analyzed the data: SMA AG. Wrote the paper: SMA YB AW AG.