A systematic review and meta-regression of placebo effect in chronic prostatitis/chronic pelvic pain syndrome - Morozov, A O; Bazarkin, A; Babaevskaya, D; Taratkin, M; Kozlov, V; Suvorov, A; Spivak, L; Mcfarland, J; Russo, G, I; Enikeev, D (European Urology, 2022)