Letter: Liver tumours and the pill.
D006528:Carcinoma, Hepatocellular / Q000139:chemically induced*; D002648:Child; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008113:Liver Neoplasms / Q000139:chemically induced*
D003276:Contraceptives, Oral