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Toossi Z, Sedor JR, Mettler MA, Everson B, Young T, Ratnoff OD.Toossi Z, et al.Proc Natl Acad Sci U S A. 1992 Dec 15;89(24):11969-72. doi: 10.1073/pnas.89.24.11969.Proc Natl Acad Sci U S A. 1992.PMID: 1465426Free PMC article.