1. Kintampo Health Research Centre, Research and Development Division, Ghana Health Service, P. O. Box 200, Kintampo North Municipality, Bono East Region, Ghana
2. African Institute for Development Policy (AFIDEP), Malawi Office, Population and Demographic Dividend, Lilongwe, Malawi
3. Regional Institute for Population Studies, P. O. Box LG 96, University of Ghana, Accra, Ghana