[Prevention of teenage pregnancy].
Siegberg
R
R
Nilsson
C G
CG
D000293:Adolescent; D000294:Adolescent Behavior; D003267:Contraception / Q000379:methods*; D003268:Contraception Behavior; D005260:Female; D006801:Humans; D011247:Pregnancy; D011253:Pregnancy in Adolescence
Teini-ikäisten raskauden ehkäisy.