1. School of Public Health, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
2. Department of Population and Health, College of Humanities and Legal Studies, University of Cape Coast, Ghana
3. Department of Epidemiology and Biostatistics, School of Public Health, Kwame Nkrumah University of Science and Technology, Kumasi, Ghana
4. Berekum College of Education, Berekum, Bono Region, Ghana
5. L & E Research Consult Ltd, Wa, Upper West Region, Ghana
6. Department of Optometry, University of Cape Coast, Ghana