Cognitive behavioural therapy versus supportive therapy for persistent positive symptoms in psychotic disorders: the POSITIVE Study, a multicenter, prospective, single-blind, randomised controlled clinical trial.
Klingberg S, Wittorf A, Meisner C, Wölwer W, Wiedemann G, Herrlich J, Bechdolf A, Müller BW, Sartory G, Wagner M, et al. Trials. 2010 Dec 29; 11:123. Epub 2010 Dec 29.