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Jing R, Xu T, Lai X, Mahmoudi E, Fang H.Jing R, et al. Among authors: xu t.Int J Environ Res Public Health. 2019 Dec 20;17(1):82. doi: 10.3390/ijerph17010082.Int J Environ Res Public Health. 2019.PMID: 31861922Free PMC article.
Jing RZ, Zhang HY, Xu TT, Zhang LY, Fang H.Jing RZ, et al. Among authors: xu tt.Beijing Da Xue Xue Bao Yi Xue Ban. 2018 Jun 18;50(3):408-415.Beijing Da Xue Xue Bao Yi Xue Ban. 2018.PMID: 29930406Free article.Chinese.
Lai X, Wahl B, Yu W, Xu T, Zhang H, Garcia C, Qin Y, Guo Y, Yin Z, Knoll MD, Fang H.Lai X, et al. Among authors: xu t.Lancet Reg Health West Pac. 2022 Mar 16;22:100430. doi: 10.1016/j.lanwpc.2022.100430. eCollection 2022 May.Lancet Reg Health West Pac. 2022.PMID: 35308577Free PMC article.