Teikeu Tessa Vladimir Vivaldi, Doctor of Medicine, Univ. Gamal Abdel Nasser de Conakry, Faculty of Medicine, Pharmacy, Odonto-Stomatology, Conakry, Guinea. Master in Public Health and Epidemiology, Univ. of Dschang, Cameroon. Master in Nutrition and Health, Univ. Gamal Abdel Nasser de Conakry, Guinea.