Macro-level age norms for the timing of sexual initiation and adolescents' early sexual initiation in 17 european countries
Madkour, Aubrey Spriggs; de Looze, Margaretha; Ma, Ping; Halpern, Carolyn Tucker; Farhat, Tilda; ter Bogt, Tom F.M.; Ehlinger, Virginie; Nic Gabhainn, Saoirse; Currie, Candace; Godeau, Emmanuelle (Elsevier BV, 2014-07-01)