1. Institutes of Molecular Biology, Friedrich-Loeffler Institutes, Federal Research Centre for Virus Diseases of Animals, D-17493 Greifswald-Insel Riems, Germany
2. Institutes of Diagnostic Virology, Friedrich-Loeffler Institutes, Federal Research Centre for Virus Diseases of Animals, D-17493 Greifswald-Insel Riems, Germany
3. Institutes of Infectology, Friedrich-Loeffler Institutes, Federal Research Centre for Virus Diseases of Animals, D-17493 Greifswald-Insel Riems, Germany