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de Bont, Paul AJM, et al. A Multi-site Single Blind Clinical Study to Compare the Effects of Prolonged Exposure, Eye Movement Desensitization and Reprocessing and Waiting List On Patients With a Current Diagnosis of Psychosis and Co Morbid Post Traumatic Stress Disorder: Study Protocol for the Randomized Controlled Trial Treating Trauma in Psychosis. BioMed Central, 2013.