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Finkeldei U, Kalbitzer HR, Eisermann R, Stewart GC, Hengstenberg W.Finkeldei U, et al. Among authors: eisermann r.Protein Eng. 1991 Apr;4(4):469-73. doi: 10.1093/protein/4.4.469.Protein Eng. 1991.PMID: 1881873