1. Department of Dermatology and Allergy; Charite - Universitätsmedizin Berlin; Berlin Germany
2. Department of Psychodermatology; Chair of Clinical Immunology and Microbiology; Medical University of Lodz; Łódź Poland
3. Department of Dermatology, Paediatric Dermatology and Oncology; Medical University of Lodz; Łódź Poland