[Statistical observation on metastatic cervical cancer].
D006258:Head and Neck Neoplasms / Q000453:epidemiology*; D006801:Humans; D007822:Laryngeal Neoplasms / Q000453:epidemiology*; D009362:Neoplasm Metastasis / Q000453:epidemiology; D010610:Pharyngeal Neoplasms / Q000453:epidemiology*