EFSA has drafted the terms of reference for a working group of the Scientific Committee on "Harmonization of Risk Assessment Methodologies for Human Health and Ecological Risk Assessment of Combined Exposure to Multiple Chemicals" ("Working Group"). The Working Group will develop a draft guidance document for human and ecological risk assessment of combined exposure to multiple chemicals using existing frameworks as starting points, and tiered approaches for each step (problem formulation, hazard identification, hazard characterization, exposure assessment, and risk characterization). Following input from this public consultation, the Working Group of the scientific committee will review the contributions and consider them in developing the guidance document. Interested parties are invited to submit written comments by November 30, 2016.
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