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Erickson SJ, Godavarty A.Erickson SJ, et al. Among authors: godavarty a.Med Eng Phys. 2009 Jun;31(5):495-509. doi: 10.1016/j.medengphy.2008.10.004. Epub 2008 Dec 2.Med Eng Phys. 2009.PMID: 19054704Review.