1 Institute of Virology and Immunobiology, University of Würzburg, 97078 Würzburg, Germany. Electronic address: m.lutz@vim.uni-wuerzburg.de.
2 Laboratory of Immunobiology, Department of Animal Development and Physiology, Graduate School of Biostudies, Kyoto University, Yoshida-Konoe, Kyoto 606-8501, Japan.
3 Department of Dermatology, University Hospital Erlangen, 91054 Erlangen, Germany.
4 Department of Dermatology & Venereology, Medical University of Innsbruck, 6020 Innsbruck, Austria.