31. More than 50 million Copper T IUDs have been distributed in over 70 countries. 32. In the following years, many different shaped plastic IUDs were invented and marketed. 33. Lazar C . Margulies developed the first plastic IUD using thermoplastics in the 1960s. 34. Guttmacher approved Margulies'idea to create a safer type of IUD using plastic. 35. "She had her IUD removed and didn't tell me ." 36. Mifepristone is also more effective than levonorgestrel while copper IUDs are the most effective method. 37. Lippes also devised the addition of the monofilament nylon string, which facilitates IUD removal. 38. Remember, the study only reported pregnancies in the first 12 months after IUD insertion. 39. The frameless intrauterine contraceptive device ( IUD ) is unlike conventional framed IUDs. 40. The frameless intrauterine contraceptive device ( IUD ) is unlike conventional framed IUDs .
