1. Department of Viral Transformation, Leibniz Institute of Virology (LIV) , Hamburg, Germany
2. Molecular, Cell and Developmental Biology, School of Life Sciences, University of Dundee , Dundee, Scotland, United Kingdom
3. Bernhard Nocht Institute for Tropical Medicine , Hamburg, Germany
4. German Centre for Infection Research (DZIF), Partner Site Hamburg-Lübeck-Borstel-Riems , Braunschweig, Germany