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Yang RJ, Sheu JJ, Chen HS, Lin KC, Huang HL.Yang RJ, et al. Among authors: chen hs.BMC Public Health. 2007 Dec 25;7:358. doi: 10.1186/1471-2458-7-358.BMC Public Health. 2007.PMID: 18158857Free PMC article.
Chen HS, Percy MS, Horner SD.Chen HS, et al.J Community Health Nurs. 2001 Fall;18(3):167-75. doi: 10.1207/S15327655JCHN1803_03.J Community Health Nurs. 2001.PMID: 11560109Review.