1. Friedrich-Alexander University Erlangen-Nürnberg (FAU); Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine; Method development and chair of the working group “Analyses in Biological Materials“, Deutsche Forschungsgemeinschaft; 91054 Erlangen Henkestr. 9-11 Germany
2. Friedrich-Alexander University Erlangen-Nürnberg (FAU); Method development; Institute and Outpatient Clinic of Occupational, Social and Environmental Medicine; 91054 Erlangen Henkestr. 9-11 Germany
3. TU Dortmund; External verification; Leibniz Research Center for Working Environment and Human Factors; 44139 Dortmund Ardeystraße 67 Germany
4. RWTH Aachen University, Faculty of Medicine; External verification; Institute for Occupational and Social Medicine; 52074 Aachen Pauwelsstraße 30 Germany
5. 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