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Young TR, Buckalew R, May AK, Boczko EM.Young TR, et al. Among authors: may ak.Math Biosci. 2012 Feb;235(2):189-200. doi: 10.1016/j.mbs.2011.12.004. Epub 2012 Jan 4.Math Biosci. 2012.PMID: 22233972Free PMC article.