title: A system of registration and statistics.
authors.forename: C
authors.initials: C
authors.lastname: Blayo
mesh_terms: D000028:Abortion, Induced; D000029:Abortion, Legal; D003267:Contraception; D003268:Contraception Behavior; D003625:Data Collection; D019049:Developed Countries; D005060:Europe; D005193:Family Planning Services; D006306:Health Surveys; D012106:Research; D012107:Research Design; D013245:Sterilization, Reproductive