1. Laboratory of Applied Biochemistry, Department of Biological Sciences, Faculty of Science, University of Ngaoundere, P.O. Box 454 Ngaoundere, Cameroon
2. Laboratory of Pharmacology and Toxicology, Department of Biochemistry, Faculty of Science, University of Yaounde I, P.O. Box 812 Yaounde, Cameroon
3. Department of Medicine, Medical and Biomedical Sciences, Higher Institute of Health Sciences, Université des Montagnes, P.O. Box 208 Bangangte, Cameroon
4. Department of Pharmacy, Higher Institute of Health Sciences, Université des Montagnes, P.O. Box 208 Bangangte, Cameroon