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Chan EY, Kim JH, Ng Q, Griffiths S, Lau JT.Chan EY, et al.Asia Pac J Public Health. 2008 Oct;20 Suppl:39-48.Asia Pac J Public Health. 2008.PMID: 19533860
Chan EYY, Huang Z, Hung KKC, Chan GKW, Lam HCY, Lo ESK, Yeung MPS.Chan EYY, et al.Int J Environ Res Public Health. 2019 Jan 15;16(2):228. doi: 10.3390/ijerph16020228.Int J Environ Res Public Health. 2019.PMID: 30650569Free PMC article.
Lam HCY, Huang Z, Liu S, Guo C, Goggins WB, Chan EYY.Lam HCY, et al.Int J Environ Res Public Health. 2020 Mar 4;17(5):1672. doi: 10.3390/ijerph17051672.Int J Environ Res Public Health. 2020.PMID: 32143415Free PMC article.