1. Department of Dermatology; National Skin Centre; 1 Mandalay Road Singapore 308205
2. Service de Dermatologie; Hôpital Archet 2, 151 Route Saint Antoine de Ginestière; 06202 Nice CEDEX 3 France
3. CHU NICE; Department of Clinical Research; University of Nice; F-06202 Nice CEDEX 3 France
4. Centre de Recherche Clinique; Nice France
5. INSERM U 1065, Team 1, CHU de Nice; Nice France