Submitted for Publication: October 10, 2011; final revision received January 6, 2012; accepted February 17, 2012.
Published Online: May 7, 2012. doi:10.1001/archgenpsychiatry.2012.222
Author Contributions: Drs Gregory and Blackwood take responsibility for the integrity of the data and the accuracy of the data analysis. All authors had full access to all the data in the study.
Financial Disclosure: None reported.
Funding/Support: This research was funded by research grants from the Department of Health (the National Forensic Mental Health Research and Development Program); the Ministry of Justice (The Dangerous People with Severe Personality Disorder Program grant); the Psychiatry Research Trust; and the National Institute for Health Research Biomedical Research Centre, South London and Maudsley National Health Service Foundation Trust and Institute of Psychiatry (King's College London).
Additional Contributions: We gratefully acknowledge the work of Sam Russell, MSc; Clare Goodwin, MSc; William Wainwright, MA; Ruben Azevedo, BSc; Francis Vergunst, MSc; Lucy Butler, MSc; Leila Niknejad, BSc; Anna Plodowski, PhD; Philip Baker, MRCPsych; Timothy Rogers, MRCPsych; Preethi Chabbra, MRCPsych; Stephen Attard, MRCPsych; Seema Sukhwal, MRCPsych; Nathan Kolla, MSc; Paul Wallang, MRCPsych; and Clare Conway, DClinPsy, in participant recruitment and assessment.