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Hui KM, Wee JL, Oei AA, Koo WH, Ang PT, Tay SK.Hui KM, et al. Among authors: koo wh.Ann Acad Med Singap. 1996 Jan;25(1):113-9.Ann Acad Med Singap. 1996.PMID: 8779529Review.
Au E, Koo WH, Tan EH, Ang PT.Au E, et al. Among authors: koo wh.J Chemother. 1996 Aug;8(4):300-3. doi: 10.1179/joc.1996.8.4.300.J Chemother. 1996.PMID: 8873837Clinical Trial.
See HT, Koo WH, Ang P, Au E, Ang PT.See HT, et al. Among authors: koo wh.Ann Acad Med Singap. 2002 Sep;31(5):651-5.Ann Acad Med Singap. 2002.PMID: 12395655Clinical Trial.