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Long-term exposure to air pollution and the incidence of Parkinson’s disease: A nested case-control study
Fig 2
The adjusted odds ratios of the exposure to PM10 and a later PD onset by comorbid diseases.
Ref: T1 level (PM10 ≤ 54 μg/m3; OR = 1). *: P < 0.05; **: P < 0.01; ***: P < 0.001.
doi: https://doi.org/10.1371/journal.pone.0182834.g002