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Lau TP, Roslani AC, Lian LH, Chai HC, Lee PC, Hilmi I, Goh KL, Chua KH.Lau TP, et al. Among authors: chua kh.BMJ Open. 2014 Aug 8;4(8):e004930. doi: 10.1136/bmjopen-2014-004930.BMJ Open. 2014.PMID: 25107436Free PMC article.