Pregnancy, the puerperium and the steroid contraceptive.
D000328:Adult; D000367:Age Factors; D003276:Contraceptives, Oral / Q000008:administration & dosage / Q000009:adverse effects*; D005163:Factor Analysis, Statistical; D005260:Female; D006801:Humans; D010298:Parity; D049590:Postpartum Period; D011247:Pregnancy; D011249:Pregnancy Complications, Cardiovascular / Q000453:epidemiology*; D013924:Thrombophlebitis / Q000453:epidemiology* / Q000401:mortality; D006113:United Kingdom; D014481:United States
D003276:Contraceptives, Oral