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Chai LE, Law CK, Mohamad MS, Chong CK, Choon YW, Deris S, Illias RM.Chai LE, et al. Among authors: deris s.Malays J Med Sci. 2014 Mar;21(2):20-7.Malays J Med Sci. 2014.PMID: 24876803Free PMC article.