1. Federal Institute for Materials Research and Testing (BAM), Richard-Willstätter-Straße 11, 12489 Berlin, Germany
2. German Federal Institute for Risk Assessment (BfR), Department of Chemical and Product Safety, Max-Dohrn-Straße 8-10, 10589 Berlin, Germany
3. German Rheumatism Research Centre Berlin (DRFZ), a Leibniz Institute, Charitéplatz 1, 10117 Berlin, Germany
4. Spetec GmbH, Berghamer Straße 2, 85435 Erding, Germany