1. Department of Dermatology, Venerology and Allergology; University Medical Center Göttingen; Göttingen Germany
2. Department of Dermatology, Venerology and Allergology; University Medical Center Mannheim; Mannheim Germany
3. Department of Pediatrics; University Medical Center Göttingen; Göttingen Germany
4. Department of Clinical Pharmacology; University Medical Center Göttingen; Göttingen Germany
5. Department of Dermatology and Venerology; University Medical Center Münster; Münster Germany