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Perrella RR, Kimme-Smith C, Tessler FN, Ragavendra N, Grant EG.Perrella RR, et al.AJR Am J Roentgenol. 1992 Jan;158(1):195-8. doi: 10.2214/ajr.158.1.1727345.AJR Am J Roentgenol. 1992.PMID: 1727345