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2. American Joint Committee for Cancer Staging and End-Results Reporting: Manual for Staging of Cancer. Chicago, American Joint Committee, 1977.
3. Lymphoepithelioma of the nasopharynx;Applebaum;Laryngoscope,1982
4. The pathology of head and neck tumors: Carcinoma of the nasopharynx, part II;Batsakis;Head Neck Surg.,1981
5. Nasopharyngeal carcinoma: An evaluation of 209 patients;Dickson;Laryngoscope,1981