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Hu XF, Guo YM, Huang BY, Bun S, Zhang LB, Li JH, Liu D, Long FY, Yang X, Jiao P.Hu XF, et al. Among authors: guo ym.Poult Sci. 2010 Sep;89(9):1967-74. doi: 10.3382/ps.2009-00547.Poult Sci. 2010.PMID: 20709983Free article.Clinical Trial.