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Sung HY, Hu TW, Ong M, Keeler TE, Sheu ML.Sung HY, et al. Among authors: sheu ml.Am J Public Health. 2005 Jun;95(6):1030-5. doi: 10.2105/AJPH.2004.042697.Am J Public Health. 2005.PMID: 15914829Free PMC article.