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Roy AK, Benson BE, Degnan KA, Perez-Edgar K, Pine DS, Fox NA, Ernst M.Roy AK, et al.Biol Psychol. 2014 Dec;103:248-54. doi: 10.1016/j.biopsycho.2014.09.007. Epub 2014 Sep 26.Biol Psychol. 2014.PMID: 25261727Free PMC article.