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Chua JL, Ng LC, Lee VJ, Ong MEH, Lim EL, Lim HCS, Ooi CK, Tyebally A, Seow E, Chen MI.Chua JL, et al. Among authors: ooi ck.Am J Epidemiol. 2019 May 1;188(5):940-949. doi: 10.1093/aje/kwy290.Am J Epidemiol. 2019.PMID: 30877759Free PMC article.