Number of Positive Lymph Nodes Combined with the Logarithmic Ratio of Positive Lymph Nodes Predicts Long-Term Survival for Patients with Node-Positive Parotid Gland Carcinoma after Surgery: a SEER Population-Based Study

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）