Analysis of information sources in references of the Wikipedia article "자궁내 장치" in Korean language version.
Copper ions released from the IUD create an environment that is toxic to sperm, preventing fertilization.14 Copper can also alter the endometrial lining, but studies show that this alteration can prevent implantation, but not disrupt implantation
Both copper IUDs and levonorgestrel releasing IUSs may interfere with implantation
the intrauterine device, or IUD (sometimes called a coil)
Both copper IUDs and levonorgestrel releasing IUSs may interfere with implantation
Copper ions released from the IUD create an environment that is toxic to sperm, preventing fertilization.14 Copper can also alter the endometrial lining, but studies show that this alteration can prevent implantation, but not disrupt implantation