1. Department of Dermatology; Hospital Infanta Cristina; Madrid Spain
2. Department of Dermatology; Fundación Jiménez Diaz; Madrid Spain
3. Department of Dermatology, Klinikum Darmstadt; Darmstadt Germany
4. Department of Dermatology, Universitäts-Hautklinik; Mainz Germany
5. Dermatopathologie Bodensee Friedrichshafen; Friedrichshafen Germany