Letter: Steroidal contraceptive therapy: hepatomas and vitamin A.
D006528:Carcinoma, Hepatocellular / Q000139:chemically induced*; D003276:Contraceptives, Oral / Q000009:adverse effects*; D045166:Estradiol Congeners / Q000009:adverse effects*; D005260:Female; D006801:Humans; D008099:Liver / Q000378:metabolism; D008113:Liver Neoplasms / Q000139:chemically induced*; D014801:Vitamin A / Q000378:metabolism; D014802:Vitamin A Deficiency / Q000139:chemically induced* / Q000150:complications
D003276:Contraceptives, Oral; D045166:Estradiol Congeners; D014801:Vitamin A