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Spriggs MK, Koller BH, Sato T, Morrissey PJ, Fanslow WC, Smithies O, Voice RF, Widmer MB, Maliszewski CR.Spriggs MK, et al. Among authors: voice rf.Proc Natl Acad Sci U S A. 1992 Jul 1;89(13):6070-4. doi: 10.1073/pnas.89.13.6070.Proc Natl Acad Sci U S A. 1992.PMID: 1631092Free PMC article.