About the Authors

Ayalu Aklilu Reda

ayaluaklilu@yahoo.com

Affiliation Department of Public Health, College of Health Sciences, Haramaya University, Harar, Ethiopia

Competing Interests

The author has declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: AAR. Analyzed the data: AAR. Contributed reagents/materials/analysis tools: AAR. Wrote the paper: AAR.