1. Department of Epidemiology and Biostatistics, School of Public Health Kwame Nkrumah University of Science and Technology Kumasi Ghana
2. Child Health Directorate Komfo Anokye Teaching Hospital Kumasi Ghana
3. School of Public Health Kwame Nkrumah University of Science and Technology Kumasi Ghana
4. Department of Clinical Microbiology, School of Medicine and Dentistry Kwame Nkrumah University of Science and Technology Kumasi Ghana
5. Department of Biochemistry and Biotechnology, College of Science Kwame Nkrumah University of Science and Technology Kumasi Ghana
6. Public Health Unit Komfo Anokye Teaching Hospital Kumasi Ghana