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Cha CH, Luo SD, Chiang PL, Chen WC, Tung YC, Su YY, Lin WC.Cha CH, et al. Among authors: tung yc.Int J Environ Res Public Health. 2021 Jun 21;18(12):6640. doi: 10.3390/ijerph18126640.Int J Environ Res Public Health. 2021.PMID: 34205502Free PMC article.