[The sexual debut of Norwegian youth].
Grünfeld
B
B
Institutt for sosialmedisin, Rikshospitalet, Oslo.
D000293:Adolescent; D003075:Coitus / Q000523:psychology*; D005260:Female; D006801:Humans; D008297:Male; D009664:Norway; D000297:Psychology, Adolescent; D012725:Sexual Behavior
Norsk ungdoms seksuelle debut.