1. From the Institute of Experimental Dermatology, Department of Pediatrics, and Institute of Molecular Virology, University of Münster, Germany; Department of Dermatology, University of Würzburg, Germany; Institute of Medical Biochemistry, University of Münster, Germany; Institute of Cell Biology, ETH Zürich, Switzerland; and Institute of Medical Physics and Biophysics, University of Münster, Germany.