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Ramchandra R, Hood SG, Denton DA, Woods RL, McKinley MJ, McAllen RM, May CN.Ramchandra R, et al.Proc Natl Acad Sci U S A. 2009 Jan 20;106(3):924-8. doi: 10.1073/pnas.0811929106. Epub 2009 Jan 9.Proc Natl Acad Sci U S A. 2009.PMID: 19136635Free PMC article.