[1] Hosp Ctr Kankan, Kankan, Guinea
[2] Mohammed VI Univ Hlth Sci, Int Sch Publ Hlth, Casablanca, Morocco
[3] Univ Sherbrooke, Charles Le Moyne Res Ctr, Community Hlth Sci Dept, Sherbrooke, PQ, Canada
[4] Jhpiego Kankan, Conakry, Guinea
[5] Minist Hlth, Oral & Dent Serv, Directorate Epidemiol & Dis Control, Rabat, Morocco
[6] Hassan II Univ Casablanca, Lab Sci & Tech Informat Commun & Educ LASTIE, IFDST, FSBM, Casablanca, Morocco
[7] Sidi Mohamed Ben Abdellah Univ, Fes, Morocco
[8] Free Univ Brussels ULB, Sch Publ Hlth, Brussels, Belgium
[9] Univ Sherbrooke, Charles Le Moyne Res Ctr, Community Hlth Sci Dept, 150 Pl Charles Lemoyne, Longueuil, PQ J4K 0A8, Canada