1. Department of Microbiology and Parasitology, Faculty of Science, University of Buea, P.O. Box 63, Cameroon
2. Laboratory of Drugs and Molecular Diagnostics, Biotechnology Unit, Faculty of Science, University of Buea, P.O. Box 63, Cameroon
3. Department of Biochemistry and Molecular Biology, Faculty of Science, University of Buea, P.O. Box 63, Cameroon
4. Department of Biochemistry, University of Douala, P.O. Box 2701, Cameroon