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Williams DB, Siewerdsen JH, Tward DJ, Paul NS, Dhanantwari AC, Shkumat NA, Richard S, Yorkston J, Van Metter R.Williams DB, et al. Among authors: paul ns.Med Phys. 2007 Oct;34(10):3916-25. doi: 10.1118/1.2776239.Med Phys. 2007.PMID: 17985637
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