Oropharyngeal cancer in India.
D009062:Mouth Neoplasms / Q000453:epidemiology* / Q000209:etiology; D010157:Palatal Neoplasms / Q000453:epidemiology; D010610:Pharyngeal Neoplasms / Q000453:epidemiology*; D010947:Plants, Toxic; D014026:Nicotiana