Cancer of the oral cavity. Is elective neck dissection beneficial?
D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D005260:Female; D006258:Head and Neck Neoplasms / Q000401:mortality / Q000517:prevention & control / Q000532:radiotherapy; D006801:Humans; D008198:Lymph Nodes / Q000473:pathology; D008207:Lymphatic Metastasis; D008297:Male; D009062:Mouth Neoplasms / Q000601:surgery*; D037981:Neck Dissection; D009364:Neoplasm Recurrence, Local; D014062:Tongue Neoplasms / Q000601:surgery