Abortion: the rearguard in birth control.
D000028:Abortion, Induced; D000293:Adolescent; D000328:Adult; D000367:Age Factors; D001291:Attitude of Health Personnel; D002140:California; D005060:Europe; D005193:Family Planning Services; D005260:Female; D006801:Humans; D007883:Legislation, Medical; D008875:Middle Aged; D011155:Population Control; D011247:Pregnancy; D014481:United States