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Li CM, Segars WP, Tourassi GD, Boone JM, Dobbins JT 3rd.Li CM, et al. Among authors: segars wp.Med Phys. 2009 Jul;36(7):3122-31. doi: 10.1118/1.3140588.Med Phys. 2009.PMID: 19673211Free PMC article.