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Vajrala N, Martens-Habbena W, Sayavedra-Soto LA, Schauer A, Bottomley PJ, Stahl DA, Arp DJ.Vajrala N, et al.Proc Natl Acad Sci U S A. 2013 Jan 15;110(3):1006-11. doi: 10.1073/pnas.1214272110. Epub 2012 Dec 31.Proc Natl Acad Sci U S A. 2013.PMID: 23277575Free PMC article.