1. Chemisches und Veterinäruntersuchungsamt (CVUA) Karlsruhe; Weissenburger Strasse 3 Karlsruhe Germany
2. Department of Food Chemistry and Phytochemistry Institute; Karlsruhe Institute of Technology (KIT); Karlsruhe Germany
3. Bruker Biospin GmbH; Silberstreifen Rheinstetten, Karlsruhe Germany