Use-effectiveness of oral and intrauterine contraception.
D000328:Adult; D000367:Age Factors; D003276:Contraceptives, Oral; D004363:Drug Utilization; D005069:Evaluation Studies as Topic; D005260:Female; D005843:Geography; D006801:Humans; D007434:Intrauterine Devices / Q000706:statistics & numerical data*; D008875:Middle Aged; D010044:Outpatient Clinics, Hospital; D011247:Pregnancy; D013997:Time Factors
D003276:Contraceptives, Oral