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Abdullah J, Ahmad M, Heng LY, Karuppiah N, Sidek H.Abdullah J, et al. Among authors: heng ly.Talanta. 2006 Oct 15;70(3):527-32. doi: 10.1016/j.talanta.2005.12.061. Epub 2006 Feb 17.Talanta. 2006.PMID: 18970803
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