1. Gesellschaft zur Förderung der Analytischen Wissenschaften e.V. ISAS-Leibniz Institute for Analytical Sciences; Otto-Hahn-Str. 6b 44227 Dortmund Germany
2. Institute for Virology; University Hospital of Essen, University of Duisburg-Essen; Essen Germany
3. Institute of Organic Chemistry; Johannes Gutenberg, University of Mainz; Duesbergweg 10-14 55128 Mainz Germany
4. University Medical Center, Institute of Immunology; Johannes Gutenberg University of Mainz; Langenbeckstr. 1, Geb. 708 55101 Mainz Germany