1. International Institute of Tropical Agriculture, Old Chinese Embassy, Accra, Ghana
2. Forest and Horticultural Crops Research Centre, Kade, School of Agriculture, University of Ghana, Legon, Ghana
3. Research Desk Consulting, Kwabenya-Accra, Ghana; Organization of African Academic Doctors, Nairobi, Kenya
4. Cocoa Health and Extension Division, Ghana Cocoa Board, Accra, Ghana
5. International Institute of Tropical Agriculture, ILRI, Nairobi, Kenya