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Cohn JN, Johnson G, Ziesche S, Cobb F, Francis G, Tristani F, Smith R, Dunkman WB, Loeb H, Wong M, et al.Cohn JN, et al.N Engl J Med. 1991 Aug 1;325(5):303-10. doi: 10.1056/NEJM199108013250502.N Engl J Med. 1991.PMID: 2057035Free article.Clinical Trial.
Francis GS, Parks R, Cohn JN.Francis GS, et al.Am Heart J. 1983 Jul;106(1 Pt 1):100-6. doi: 10.1016/0002-8703(83)90446-5.Am Heart J. 1983.PMID: 6346844
Johnson G, Carson P, Francis GS, Cohn JN.Johnson G, et al. Among authors: francis gs.Circulation. 1993 Jun;87(6 Suppl):VI32-9.Circulation. 1993.PMID: 8500237Clinical Trial.