1. Department of Dermatology; CHU Tokoin; University of Lomé; Lomé; Togo
2. Department of Dermatology; CHU Yalgado Ouédraogo; University of Ouagadougou; Ouagadougou; Burkina Faso
3. Department of Dermatology; CNHU Cotonou; Faculty of Health and Sciences of Cotonou; University of Abomey Calavie; Cotonou; Benin
4. Department of Dermatology; CHU Bangui; University of Bangui; Bangui; Central African Republic