1. Institute for Hygiene and Infectious Diseases of Animals Justus Liebig University Giessen; Giessen Germany
2. Department of Medical Microbiology University of Zurich; Zurich Switzerland
3. Department of Parasitology University of Hohenheim; Stuttgart Germany
4. Medical Microbiology Justus Liebig University Giessen; Giessen Germany
5. Central Laboratory and Vaccination Center Stiftung Juliusspital, University of Wuerzburg; Wuerzburg Germany
6. Institute for Virology University Hospital of Marburg and Giessen; Marburg/Lahn Germany
7. Institute for Parasitology Justus Liebig University Giessen; Giessen Germany