Oeps: Onbekende tag `animatie’ met attributen {"id"=>"54751", “titel”=>"Seksuele ontwikkeling in boomringen", “credits”=>"Asha ten Broeke / Kennislink ", “breedte”=>"554", “hoogte”=>"526"}
Bronnen
Carol Sigelman en Elizabeth Rider (2003). Gender roles and sexuality. In: Life-span human development, 4th edition, Wadsworth/Thomson, Belmont.
I. Meizner (1987). Sonographic observation of in utero fetal “masturbation” Journal of Ultrasound in Medicine (6), pagina 111.
Giorgio Giorgi en Marco Siccardi (1996). Ultrasonographic observation of a female fetus’ sexual behavior in utero. American Journal Obstetrics and Gynecology (175) 3, pagina 753.