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The four main possible questions in mixtures analyses.
| 1. | Are there specific patterns of exposure in the study population? |
| 2. | Which are the toxic agents in the mixture? Or, what are the independent effects of each mixture member on the health outcome of interest? |
| 3. | Are there synergistic effects or interactions among mixture members? |
| 4. | What is the overall effect of the mixture on the outcome of interest? |
