Gastric and oesophageal cancer in the Welsh.
D000017:ABO Blood-Group System; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D006801:Humans; D007055:Iceland; D013274:Stomach Neoplasms / Q000453:epidemiology* / Q000209:etiology; D014852:Wales
D000017:ABO Blood-Group System