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Williams LE, Must A, Avery S, Woolard A, Woodward ND, Cohen NJ, Heckers S.Williams LE, et al. Among authors: heckers s.Biol Psychiatry. 2010 Oct 1;68(7):617-24. doi: 10.1016/j.biopsych.2010.05.035. Epub 2010 Jul 23.Biol Psychiatry. 2010.PMID: 20655509Free PMC article.