[Comparison of clinical effects of stainless steel IUDs with and without copper].

The clinical efficacy of stainless steel rings with copper (SSRC) was compared to the efficacy of stainless steel rings without copper (SSR). 1154 SSRC cases and 1298 SSR cases were studied from January 1978 to April 1980. The clinical effects were evaluated according to the life table. The results of observation during the 2-year period were as follows… CONTINUE READING