Voice over time: long-term effects of therapy in muscle tension dysphonia with a 24-month follow-up. - Altan E; Barmak E; Söylemez D (European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery, 2026)