Mayo Clinic: “Copper IUD (ParaGard).”
Cleveland Clinic: “Paragard IUD (copper).”
ACOG: “Emergency contraception”.
NHS: “Intrauterine device (IUD).
Lisa Holloway, CRNP, Washington, DC.
CDC: “Classifications for Emergency Contraception”.
UCSF Beyond The Pill: “Copper IUDs Like CE.”
Tara Scott, MD, Akron, OH.
Obstetrics and Gynecology International: “Practical advice for emergency contraception of the IUD in young women.”