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Rilling JK, Barks SK, Parr LA, Preuss TM, Faber TL, Pagnoni G, Bremner JD, Votaw JR.Rilling JK, et al.Proc Natl Acad Sci U S A. 2007 Oct 23;104(43):17146-51. doi: 10.1073/pnas.0705132104. Epub 2007 Oct 16.Proc Natl Acad Sci U S A. 2007.PMID: 17940032Free PMC article.