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Riches SF, Payne GS, Morgan VA, Sandhu S, Fisher C, Germuska M, Collins DJ, Thompson A, deSouza NM.Riches SF, et al. Among authors: collins dj.AJR Am J Roentgenol. 2009 Dec;193(6):1583-91. doi: 10.2214/AJR.09.2540.AJR Am J Roentgenol. 2009.PMID: 19933651