1. Pharmacology and Toxicology Department, Centre for Plant Medicine Research, P. O. Box 73, Mampong, Akuapem, Ghana
2. Clinical Research Department, Centre for Plant Medicine Research, P. O. Box 73, Mampong, Akuapem, Ghana
3. Department of Applied Chemistry and Biochemistry, Faculty of Applied Sciences, University for Development Studies, Navrongo Campus, P. O. Box 24, Navrongo, Ghana
4. Phytochemistry Department, Centre for Plant Medicine Research, P. O. Box 73, Mampong, Akuapem, Ghana
5. Department of Biochemistry, Cell and Molecular Biology, University of Ghana, P. O. Box LG 54, Legon, Ghana