1. Research Unit for Photodermatology; Medical University of Graz; Graz Austria
2. Center for Medical Research; Medical University of Graz; Graz Austria
3. Department of Dermatology; Medical University of Graz; Graz Austria
4. Department of Medicine, Surgery, and Dentistry; Scuola Medica Salernitana; University of Salerno; Fisciano Italy