http://kidshealth.org/teen/your_body/
http://www.bbc.co.uk/science/humanbody/
http://www.who.int/reproductive-health/index.htm
http://www.colodoutero.org.br/
http://www.fleury.com.br/Publico/InstitutoFleury/Pages/HistoriaInstituto.aspx
http://www.fertilityportugal.com/portugal/index.jsp
http://www.abend.org.br/seucorpo.htm