1. Centre for Safety of Substances and ProductsNational Institute for Public Health and the Environment RIVMBilthovenThe Netherlands
2. Swiss Centre for Applied EcotoxicologyDübendorfSwitzerland
3. Department of Environmental ToxicologyEAWAGDübendorfSwitzerland
4. Department of Environmental Science and Analytical ChemistryStockholm UniversityStockholmSweden