And the paper:

Virtual reality in the treatment of persecutory delusions: Randomised controlled experimental study testing how to reduce delusional conviction. Daniel Freeman et al, Brit J of Psych, July 2016

https://www.cambridge.org/core/journals/the-british-journal-of-psychiatry/article/virtual-reality-in-the-treatment-of-persecutory-delusions-randomised-controlled-experimental-study-testing-how-to-reduce-delusional-conviction/7898DDD7E2B2343200EB9AE7CDDFD49B

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