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Yu L, Hammer RE, Li-Hawkins J, Von Bergmann K, Lutjohann D, Cohen JC, Hobbs HH.Yu L, et al.Proc Natl Acad Sci U S A. 2002 Dec 10;99(25):16237-42. doi: 10.1073/pnas.252582399. Epub 2002 Nov 20.Proc Natl Acad Sci U S A. 2002.PMID: 12444248Free PMC article.