Long-term analysis of prognostic risk factors impacting surgical outcomes in patients with external auditory canal carcinoma. - Lohnherr V; Wurzrainer N; Sand M; Federspil P; Hess J; Zaoui K; Plath M (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, 2023)