Session 2: Cutting Edge Grouping Frameworks: The NanoReg2 Grouping Approach: Andrea Haase, Federal Institute for Risk Assessment (BfR); Draft GRACIOUS framework for grouping and read-across of nanomaterials for regulatory risk assessment and safe-by-design: Agnes Oomen, National Institute for Public Health and the Environment (RIVM); Environmental hazard and risk of nanomaterials: grouping concepts for aquatic and terrestrial toxicity:  Dana Kühnel, Helmholtz Centre for… [read post]