Oral contraceptives. Safety factors in prolonged use of progestin-estrogen combinations. 1.
D003276:Contraceptives, Oral / Q000009:adverse effects* / Q000627:therapeutic use*; D004967:Estrogens / Q000627:therapeutic use; D005260:Female; D006801:Humans; D011372:Progestins / Q000627:therapeutic use
D003276:Contraceptives, Oral; D004967:Estrogens; D011372:Progestins