1. Department of Dermatology of the University Medicine Greifswald, Sauerbruchstrasse, Greifswald, Germany
2. Department of Traumatology of the University Medicine Greifswald, Sauerbruchstrasse, Greifswald, Germany
3. Klinik am See, Rüdersdorf bei Berlin, Germany
4. Departments of Dermatology, Venerology, Allergology and Immunology Center, Dessau Medical Center, Theodor Fontane Medical University Brandenburg, Auenweg, Dessau-Roßlau, Germany