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Sterk A, Johansson BE, Taweel HZ, Murphy M, van Vuuren AM, Hendriks WH, Dijkstra J.Sterk A, et al. Among authors: van vuuren am.J Dairy Sci. 2011 Dec;94(12):6078-91. doi: 10.3168/jds.2011-4617.J Dairy Sci. 2011.PMID: 22118095Free article.