SANGHO Oumar2 ( osangho75@gmail.com ), BARRY Djibril 1 (djibilirou@yahoo.fr), DEMBELE Assetou3 (dembeleassetou@gmail.com), SY El hadj issa Amaguiré3 (amasy2410@gmail.com), KABORE Jean4 (jck238@gmail.com), YANOGO Pauline1,5 (yanogo.pauline@yahoo.fr), TRAORE Bouyagui6 (bouyaguitra@gmail.com), KEITA Hanine6 (hankeit77@gmail.com), MEDA Nicolas 1,7 (nicolas.meda@gmail.com).