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Co-occurrence of self-reported environmental intolerance (EI) attributed to chemicals, indoor molds, and electromagnetic fields (EMFs). In (a), EI definition A is used (annoyance attributed to two or more of the six chemicals in Table 1, indoor molds, or EMFs). In (b), EI definition E is used (definition A with multiple organ symptoms including central nervous system symptoms, behavioral changes, and disability). The percentage is calculated from the total n = 680, n (%).
