This is the Cochrane database systematic review (as ref above)
Cognitive behavioural therapy for tinnitus
Thomas Fuller 1 2 3, Rilana Cima 1 2, Berthold Langguth 4, Birgit Mazurek 5, Johan Ws Vlaeyen 6, Derek J Hoare 7
Authors' conclusions: CBT may be effective in reducing the negative impact...