[Sociomedical observations of cancers of the head and neck region. 1].
D004938:Esophageal Neoplasms / Q000453:epidemiology*; D006258:Head and Neck Neoplasms / Q000453:epidemiology*; D006801:Humans; D007564:Japan; D007822:Laryngeal Neoplasms / Q000453:epidemiology*; D009062:Mouth Neoplasms / Q000453:epidemiology*; D009669:Nose Neoplasms / Q000453:epidemiology*; D010610:Pharyngeal Neoplasms / Q000453:epidemiology*; D012423:Rural Health; D013964:Thyroid Neoplasms / Q000453:epidemiology*