The prevalence and correlates of nonaffective psychosis in the National Comorbidity Survey Replication (NCS-R).
Kessler RC, Birnbaum H, Demler O, Falloon IR, Gagnon E, Guyer M, Howes MJ, Kendler KS, Shi L, Walters E, et al. Biol Psychiatry. 2005 Oct 15; 58(8):668-76. Epub 2005 Jul 14.