Continuous Improvement of Chronic Tinnitus Through a 9-Month Smartphone-Based Cognitive Behavioral Therapy: Randomized Controlled Trial. - Walter, Uso; Pennig, Stefan; Bleckmann, Lothar; Röschmann-Doose, Kristina; Wittig, Thomas; Thomsen, Jörn; Schlee, Winfried (Journal of Medical Internet Research, 2025)