Oral contraceptives and severe hypertension.
D000328:Adult; D000367:Age Factors; D002986:Clinical Trials as Topic; D003276:Contraceptives, Oral / Q000009:adverse effects*; D005260:Female; D006801:Humans; D006973:Hypertension / Q000139:chemically induced*; D008875:Middle Aged
D003276:Contraceptives, Oral