A re-appraisal of contraception: benefits v. risks.
D000022:Abortion, Spontaneous; D003226:Congresses as Topic; D003276:Contraceptives, Oral; D005260:Female; D006801:Humans; D007434:Intrauterine Devices; D011247:Pregnancy; D011792:Quebec; D012306:Risk
D003276:Contraceptives, Oral