1. Population, Health and Gender Studies Group, Department of Geography and Rural Development, Faculty of Social Sciences; Kwame Nkrumah University of Science and Technology; Kumasi Ghana
2. Nuffield Department of Population Health; University of Oxford; Oxford UK
3. Department of Community Health, School of Medical Sciences; Kwame Nkrumah University of Science and Technology; Kumasi Ghana
4. The Ethox Centre, Nuffield Department of Population Health; University of Oxford; Oxford UK