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The intrauterine spiral or IUD is a contraceptive method consisting of a small plastic device that is placed inside the uterus to prevent pregnancy. How does it work? What are the advantages? Dr. Francesca Testa, gynecologist at the Santagostino Medical Center, explains. Subscribe to our YouTube channel: / salutesantagostino Follow the advice of our doctors on: http://www.cmsantagostino.it/santagos... / cmsantagostino