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Haines-Butterick L, Rajagopal K, Branco M, Salick D, Rughani R, Pilarz M, Lamm MS, Pochan DJ, Schneider JP.Haines-Butterick L, et al. Among authors: pochan dj.Proc Natl Acad Sci U S A. 2007 May 8;104(19):7791-6. doi: 10.1073/pnas.0701980104. Epub 2007 Apr 30.Proc Natl Acad Sci U S A. 2007.PMID: 17470802Free PMC article.