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Steiner JA, Ferguson SJ, van Lenthe GH.Steiner JA, et al. Among authors: ferguson sj.Med Eng Phys. 2016 Apr;38(4):417-22. doi: 10.1016/j.medengphy.2016.01.006. Epub 2016 Feb 23.Med Eng Phys. 2016.PMID: 26920074Free article.