title: Pregnant teenagers and contraception. Contraceptive failure may be a major factor in teenage pregnancy.
authors.forename: E S
authors.initials: ES
authors.lastname: Williams
mesh_terms: D000293:Adolescent; D017280:Condoms; D003267:Contraception; D003268:Contraception Behavior; D005260:Female; D006801:Humans; D008297:Male; D011247:Pregnancy; D011253:Pregnancy in Adolescence; D012725:Sexual Behavior