An epidemiological association between betel-chewing and upper alimentary tract cancer among Natal Indians.
D001114:Areca; D003813:Dentistry; D005770:Gastrointestinal Neoplasms / Q000453:epidemiology; D009062:Mouth Neoplasms / Q000453:epidemiology; D009303:Nasopharyngeal Neoplasms / Q000453:epidemiology; D010946:Plants, Medicinal