Contraceptive effect and development of levonorgestrel - releasing intrauterine system 缓释左炔诺孕酮宫内纤维置入系统的避孕与治疗进展
2.
A clinical comparative observation among copper iud lower dose mifepristone and levonoregestrel for emergency contraception 小剂量米非司酮与单方左炔诺孕酮用于紧急避孕的临床比较观察