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Wingender E, Kel AE, Kel OV, Karas H, Heinemeyer T, Dietze P, Knüppel R, Romaschenko AG, Kolchanov NA.Wingender E, et al.Nucleic Acids Res. 1997 Jan 1;25(1):265-8. doi: 10.1093/nar/25.1.265.Nucleic Acids Res. 1997.PMID: 9016550Free PMC article.