1. Department of Dermatology, Heinrich Heine University, D-40225 Düsseldorf, Germany, Department of Biochemistry and Molecular Biology and Victorian Bioinformatics Consortium, Monash University, 3800 Monash, Australia, Baker Medical Research Institute, St Kilda Central 8008, Australia, and Institut für umweltmedizinische Forschung, Heinrich Heine University, D-40028 Düsseldorf, Germany