1. Research Unit in Applied Microbiology and Pharmacology of natural substances, Research Laboratory in Applied Biology, Polytechnic School of Abomey-Calavi, University of Abomey-Calavi, 01P.O.Box 2009, Cotonou, Benin
2. Normal High School of Natitingou, National University of Sciences, Technology, Engineering and Mathematics, P.O. Box 72, Natitingou, Benin
3. School of Management and Operation of Livestock Systems, National University of Agriculture, Ketou, Benin
4. Laboratory of Molecular Physiopathology and Toxicology, Faculty of Sciences and Techniques, University of Abomey-Calavi, 01 P.O.Box 526, Cotonou, Benin