1. Institute
of Hydrochemistry, Chair of Analytical Chemistry, Technical University of Munich, Marchioninistrasse 17, D-81377 Munich, Germany
2. Department
of Virology, University Medical Center, Georg-August-University Göttingen, Kreuzbergring 57, D-37075 Göttingen, Germany
3. Division
of Microbiology and Animal Health, Georg-August-University Göttingen, Burckhardtweg
2, D-37077 Göttingen, Germany
4. Institute
of Microbiology and Virology, Brandenburg Medical School Theodor Fontane, Grossenhainer Strasse 57, D-01968 Senftenberg, Germany