Associate Professor, Johns Hopkins Bloomberg School of Public Health

Johns Hopkins Bloomberg School of Public Health

University of the Witwatersrand

Center for International Forestry Research (CIFOR)-World Agroforestry Center (ICRAF)

School of Public Health, Faculty of Medicine, University of Chile

University of Cape Town

Professor of Reproductive and Public Health, Jimma University, Ethiopia

University of Washington

National Institute for Medical Research, Mwanza

Ghana Communication Technology University