About the Authors

Hagos Godefay

hgodefay@yahoo.com

Affiliation Tigray Regional Health Bureau, Mekelle, Ethiopia

Peter Byass

Affiliations Umeå Centre for Global Health Research, Department of Public Health and Clinical Medicine, Umeå University 90187 Umeå, Sweden, Institute of Applied Health Sciences, School of Medicine and Dentistry, University of Aberdeen, Aberdeen, United Kingdom, MRC/Wits Rural Public Health and Health Transitions Research Unit, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa

Wendy J. Graham

Affiliation Institute of Applied Health Sciences, School of Medicine and Dentistry, University of Aberdeen, Aberdeen, United Kingdom

John Kinsman

Affiliation Umeå Centre for Global Health Research, Department of Public Health and Clinical Medicine, Umeå University 90187 Umeå, Sweden

Afework Mulugeta

Affiliation College of Health Sciences, Mekelle University, Mekelle, Ethiopia

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: HG PB JK WG AM. Performed the experiments: HG PB JK WG AM. Analyzed the data: HG PB JK WG AM. Contributed reagents/materials/analysis tools: HG PB JK WG AM. Wrote the paper: HG PB JK WG AM.