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Chu PY, Hwang TI, Teng TH, Lee CC.Chu PY, et al. Among authors: hwang ti.Ann Saudi Med. 2007 May-Jun;27(3):199-200. doi: 10.5144/0256-4947.2007.199.Ann Saudi Med. 2007.PMID: 17568163Free PMC article.No abstract available.