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美《医学论坛》第21卷第5期(1980年)报道赫尔希消息:宾夕法尼亚州立大学赫尔希医学中心的妇产科副教授斯顿夫(Paul G.Stum-pf)说,一种持续释放类固醇的阴道避孕环可能较口服避孕药更安全,而且同样有效和方便。由于上述类固醇绝大部分不通过肝脏,所以很少有高血压的危险以及口服避孕药时发生的许多疾病。斯顿夫和其同事米什希尔(Daniel Mis-hell)已在南加利福尼亚大学的附属医学院,开始对避孕阴道环(CVR)进行研究。硅酮
Volume 21, Issue 5, 1980 (United States of America) Medical Report Hershey: Paul G. Stum-pf, associate professor of obstetrics and gynecology at Penn State University Hirsch’s Medical Center, said a sustained Vaginal birth control steroid release ring may be more secure than oral contraceptives, but also effective and convenient. Because most of the above steroids do not pass through the liver, there is little risk of hypertension and many diseases that occur with oral contraceptives. Stumpf and his colleague Daniel Mis-hell have been investigating the contraceptive vaginal ring (CVR) at the University of Southern California’s Affiliated Medical School. Silicone