Hince 1986, a uterine cavity-shaped stainless steel IUD was used by 400 women in Anshan city, north China. Among them 200 were workers and 200 peasents. 1. Follow up: women were followed at 3rd, 6th, and 12th month af...Hince 1986, a uterine cavity-shaped stainless steel IUD was used by 400 women in Anshan city, north China. Among them 200 were workers and 200 peasents. 1. Follow up: women were followed at 3rd, 6th, and 12th month after insertion. 3 cases lost展开更多
文摘Hince 1986, a uterine cavity-shaped stainless steel IUD was used by 400 women in Anshan city, north China. Among them 200 were workers and 200 peasents. 1. Follow up: women were followed at 3rd, 6th, and 12th month after insertion. 3 cases lost
