1. Department of Dermatology and Allergology; Philipps-University Marburg; Marburg Germany
2. Institute of Virology and Immunobiology; Department of Immunology; Julius-Maximilians University Würzburg; Würzburg Germany
3. Department of Ophthalmology; Philipps-University Marburg; Marburg Germany
4. Department of Microbiology and Immunology; School of Medicine; Stanford University; Stanford CA USA