1. Institute for Pharmacy and Food Chemistry Justus Maximilians University Würzburg Am Hubland 97074 Würzburg Germany
2. Institute for Pharmaceutical and Biomedical Sciences Johannes Gutenberg University Mainz Staudingerweg 5 55128 Mainz Germany
3. Institute of Medical Virology Justus Liebig University Giessen Schubertstrasse 81 35392 Giessen Germany