1. Department of Dermatology; Hospital del Mar, Parc de Salut Mar; Institut Hospital del Mar d'Investigacions Mèdiques (IMIM); Barcelona Spain
2. Department of Dermatology; School of Medicine, University Clinic of Navarra; Pamplona Spain
3. Department of Dermatology; Kurume University School of Medicine, and Kurume University Institute of Cutaneous Cell Biology; Fukuoka Japan
4. Department of Dermatology; Hospital Clinic de Barcelona; Barcelona Spain