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Curtis MA, Penney EB, Pearson AG, van Roon-Mom WM, Butterworth NJ, Dragunow M, Connor B, Faull RL.Curtis MA, et al.Proc Natl Acad Sci U S A. 2003 Jul 22;100(15):9023-7. doi: 10.1073/pnas.1532244100. Epub 2003 Jul 9.Proc Natl Acad Sci U S A. 2003.PMID: 12853570Free PMC article.