1. BASF SE; Corporate Health Management, FEH/CB; 67056 Ludwigshafen Germany
2. Friedrich-Alexander University Erlangen-Nürnberg (FAU); Chair of the Working Group “Setting of Threshold Limit Values in Biological Materials”, Deutsche Forschungsgemeinschaft; Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine; 91054 Erlangen Henkestr. 9-11 Germany
3. Institute of Applied Biosciences; Karlsruhe Institute of Technology (KIT); Chair of the Permanent Senate Commission for the Investigation of Health Hazards of Chemical Compounds in the Work Area, Deutsche Forschungsgemeinschaft, Department of Food Chemistry and Toxicology; 76131 Karlsruhe Adenauerring 20a, Building 50.41 Germany