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Sharafuddin MJ, Raboi CA, Abu-Yousef M, Lawton WJ, Gordon JA.Sharafuddin MJ, et al.Radiology. 2001 Jul;220(1):168-73. doi: 10.1148/radiology.220.1.r01jl11168.Radiology. 2001.PMID: 11425991Clinical Trial.