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Beatrous TE, Choyke PL, Frank JA.Beatrous TE, et al. Among authors: choyke pl.AJR Am J Roentgenol. 1990 Jul;155(1):85-8. doi: 10.2214/ajr.155.1.2112871.AJR Am J Roentgenol. 1990.PMID: 2112871