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Wolfenden RE, Pumford NR, Morgan MJ, Shivaramaiah S, Wolfenden AD, Pixley CM, Green J, Tellez G, Hargis BM.Wolfenden RE, et al. Among authors: hargis bm.Poult Sci. 2011 Nov;90(11):2627-31. doi: 10.3382/ps.2011-01360.Poult Sci. 2011.PMID: 22010250Free article.Clinical Trial.