Teenage pregnancy--a contemporary problem of adolescence.
D000028:Abortion, Induced; D000293:Adolescent; D000300:Adoption; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D011247:Pregnancy; D011248:Pregnancy Complications / Q000517:prevention & control*; D011253:Pregnancy in Adolescence; D012306:Risk; D012736:Sex Education; D012725:Sexual Behavior