Verbal recall and recognition in twins discordant for schizophrenia.
van Erp TG, Therman S, Pirkola T, Tuulio-Henriksson A, Glahn DC, Bachman P, Huttunen MO, Lönnqvist J, Hietanen M, Kaprio J, et al. Psychiatry Res. 2008 Jun 30; 159(3):271-80. Epub 2008 Apr 28.