1 University of Lübeck, Institute of Virology and Cell Biology , Lübeck, Germany ; University Hospital Schleswig-Holstein, Medical Department I , Luebeck, Germany.
2 University of Luebeck, Institute of Anatomy , Luebeck, Germany.
3 University of Luebeck, Institute of Anatomy , Luebeck, Germany ; University Hospital Schleswig-Holstein, Medical Department I , Luebeck, Germany.
4 University of Lübeck, Institute of Virology and Cell Biology , Lübeck, Germany.