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Schwimmer M, Heiken JP, McClennan BL, Friedrich ER.Schwimmer M, et al. Among authors: friedrich er.Radiology. 1985 Nov;157(2):313-7. doi: 10.1148/radiology.157.2.4048437.Radiology. 1985.PMID: 4048437
Smith EM, Friedrich E, Pribor EF.Smith EM, et al.Compr Psychiatry. 1994 Mar-Apr;35(2):157-63. doi: 10.1016/0010-440x(94)90062-m.Compr Psychiatry. 1994.PMID: 8187481Review.
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