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基于母子保健或控制人口的增加,世界卫生组织(WHO)、国际家庭计划联盟(1 PPF)以及各国除对生殖生理的基础研究以外,对新的避孕方法以及现有避孕法的效果、安全性也进行了评价和研究。一、甾体激素避孕法 (一)口服避孕药片:1959年始用于美国,现除日本外已是各国最普及的避孕法。1974年估计,全世界有五亿妇女服用,在澳大利亚、西德、加拿大等国15～44岁妇女25%以上服用,中国有1,300～2,000万人服用。在英国一次回顾调查中,访问了23,000服用者
In addition to basic research on reproductive physiology, the World Health Organization (WHO), the International Family Planning Coalition (1 PPF), and various countries on the effects of new contraceptive methods and existing contraceptive methods, and safety, based on increased maternal and child health or population control Also conducted evaluation and research. First, the steroid hormonal method of contraception (A) oral contraceptive tablets: the United States started in 1959, now except Japan has become the most popular method of contraception in all countries. In 1974, it was estimated that 500 million women in the world took more than 25% of women aged 15-44 in Australia, West Germany and Canada, and 13 million to 20 million people in China took it. In a UK survey, 23,000 users were interviewed