概况(一)减量长效口服避孕药效果根据江苏、上海、北京、四川、天津等23省、市、自治区临床与实验室汇总的资料,临床试用复方18甲、三合一、复方16次甲等三种减量长效口服避孕药,服药者共10,783人。原由北京、天津、上海、广东于1975年底开始试服,经临床及实验室观察,1977年2月全国会议确定扩大临床 Overview (a) reduce the effect of long-acting oral contraceptives Jiangsu, Shanghai, Beijing, Sichuan, Tianjin and other 23 provinces, municipalities and autonomous regions clinical and laboratory data, clinical trial compound 18 A, triple, compound 16 A reduction of three kinds of long-acting oral contraceptives, taking a total of 10,783 people. Originally Beijing, Tianjin, Shanghai, Guangdong trial dress at the end of 1975, clinical and laboratory observations, the National Conference in February 1977 to determine the expansion of clinical