1. Department of Dermatology, University Hospital Mahavoky Atsimo, Mahajanga, Madagascar
2. Department of Dermatology, University Hospital Joseph Raseta Befelatanana, Antananarivo, Madagascar
3. Department of Dermatology, University Hospital of Care and Public Health Analakely, Antananarivo, Madagascar
4. Department of Occupational Health and Safety, Inter-enterprise Medical Center, Antananarivo, Madagascar
5. Department of Dermatology, University Hospital of Morafeno, Toamasina, Madagascar