Abortion and contraceptive failure.
D000028:Abortion, Induced; D003267:Contraception; D003268:Contraception Behavior; D019049:Developed Countries; D005060:Europe; D005193:Family Planning Services; D006113:United Kingdom
Abortion, Induced; Contraception; Contraception Failure; Contraceptive Usage; Developed Countries; Europe; Family Planning; Family Planning, Behavioral Methods; Fertility Control, Postconception; Natural Family Planning; Northern Europe; United Kingdom