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Fey MF, Liechti-Gallati S, von Rohr A, Borisch B, Theilkäs L, Schneider V, Oestreicher M, Nagel S, Ziemiecki A, Tobler A.Fey MF, et al. Among authors: nagel s.Blood. 1994 Feb 15;83(4):931-8.Blood. 1994.PMID: 8111064Free article.