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Schenk DB, Leffert HL.Schenk DB, et al. Among authors: leffert hl.Proc Natl Acad Sci U S A. 1983 Sep;80(17):5281-5. doi: 10.1073/pnas.80.17.5281.Proc Natl Acad Sci U S A. 1983.PMID: 6310568Free PMC article.
Leffert HL, Koch KS.Leffert HL, et al.Ann N Y Acad Sci. 1980;339:201-15. doi: 10.1111/j.1749-6632.1980.tb15979.x.Ann N Y Acad Sci. 1980.PMID: 6930831No abstract available.