1. Toxicology and Hydrology Laboratory, Faculty of Medicine, Pharmacy and Dentistry, Cheikh Anta Diop University; Fann, Avenue Cheikh Anta Diop, PoB:5005, Dakar
2. Department of Physical and Chemical Sciences, Training and Research Unit of Health Sciences Iba Der Thiam University; Grand Standing, Thiès, PoB: A967, Thiès
3. Instutute of Health and Development, Cheikh Anta Diop University; Fann, Avenue Cheikh Anta Diop, PoB:5005, Dakar
4. Institute of Leadership for Development (ILDP), Résidences les Almadies, Dakar