Letter: Intracranial venous thrombosis and the pill.
D003276:Contraceptives, Oral / Q000009:adverse effects*; D004967:Estrogens / Q000009:adverse effects; D006801:Humans; D002542:Intracranial Embolism and Thrombosis / Q000139:chemically induced*; D013924:Thrombophlebitis / Q000139:chemically induced
D003276:Contraceptives, Oral; D004967:Estrogens