References: 

1. Kelleher I, Corcoran P, Keeley H, et al. Psychotic symptoms and population risk for suicide attempt: a prospective cohort study. JAMA Psychiatry. 2013 Jul 17 [Epub ahead of print]. http://archpsyc.jamanetwork.com/article.aspx?articleID=1714402. Accessed July 29, 2013.