论文部分内容阅读
既往20余年,有关长效激素类避孕法的持续性、适应率及血类固醇水平稳定性的研究有了发展。其中最有希望的是释放类固醇的阴道避孕环(CVR)。类固醇通过阴道上
In the past 20 years, the research on the persistence, adaptive rate and the stability of the blood steroid level of the long-acting hormonal contraceptive method has been developed. One of the most promising is the release of steroid vaginal ring (CVR). Steroids pass through the vagina