1. Department of Medical Microbiology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, P. O. Box 30001, 9700 RB Groningen, the Netherlands
2. Department of Dermatology, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9700 RB Groningen, the Netherlands
3. Pepscan Therapeutics BV, P. O. Box 2098, 8203 AB Lelystad, the Netherlands
4. IQ Therapeutics, Rozenburglaan 13a, 9727 DL Groningen, the Netherlands
5. Institut für Mikrobiologie, Ernst-Moritz-Arndt Universität Greifswald, Friedrich-Ludwig-Jahn-Str. 15, D-17489 Greifswald, Germany