TY - GEN AU - Bolt,Hermann M TI - Grouping of nanomaterials for risk assessment SN - 1432-0738 PY - 2015///0723 KW - Animals KW - Hazardous Substances KW - chemistry KW - Humans KW - Nanostructures KW - Toxicology KW - methods N1 - Publication Type: Editorial; Comment UR - https://doi.org/10.1007/s00204-014-1416-2 ER -