Affiliation: | 1. Department of Dermatology, Venereology and Allergology, Georg August University of Goettingen, G?ttingen, GermanyTel.: +49 (0) 551 396416, Fax: +49 (0) 551 396416;2. Department of Dermatology and Allergology, Klinikum Augsburg, Augsburg, Germany;3. Department of Dermatology, Venereology and Allergology, Georg August University of Goettingen, G?ttingen, Germany;4. Department of Dermatology and Allergy, Hannover Medical School, Hannover, Germany;5. Department of Medical Statistics, Georg August University of Goettingen, G?ttingen, Germany |