1. UFR of Dermatology; Mohammed V Souissi University Rabat; Rabat 10100 Morocco
2. Department of Dermatology; Ibn Sina University Hospital; Rabat Morocco
3. Faculty of Medicine; Laboratory of Biostatistic; Clinical Research and Epidemiology, Mohammed V Souissi University Rabat; Rabat 10100 Morocco
4. French Vitiligo Association; Bordeaux France