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Gipson CD, Reissner KJ, Kupchik YM, Smith AC, Stankeviciute N, Hensley-Simon ME, Kalivas PW.Gipson CD, et al.Proc Natl Acad Sci U S A. 2013 May 28;110(22):9124-9. doi: 10.1073/pnas.1220591110. Epub 2013 May 13.Proc Natl Acad Sci U S A. 2013.PMID: 23671067Free PMC article.