The study of ABO blood groups in oral cancer.
D000017:ABO Blood-Group System; D002610:Cheek; D006801:Humans; D007194:India; D009061:Mouth Mucosa; D009062:Mouth Neoplasms / Q000097:blood / Q000453:epidemiology* / Q000235:genetics; D014062:Tongue Neoplasms / Q000453:epidemiology*
D000017:ABO Blood-Group System