1. CMB Collegium Medicum Berlin; Berlin Germany
2. Department of Dermatology; University of Copenhagen; Roskilde Hospital; Roskilde Denmark
3. Department of Dermatology; University of Modena and Reggio Emilia; Modena Italy
4. Michelson Diagnostics; Maidstone UK
5. Department of Dermatology; Klinikum Augsburg; Augsburg Germany