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1996年8月～1998年3月,我所对米非司酮用于紧急避孕观察追踪145例。对在易孕期中无避孕措施或避孕措施失败者,于性交72小时内,随机给予米非司酮25mg或50mg,分两次服用,观察其避孕效
From August 1996 to March 1998, 145 cases of mifepristone were used to observe emergency contraception. For those who did not have contraception or contraceptive measures during the first trimester, they were randomized to receive either mifepristone 25 mg or 50 mg within 72 hours of intercourse and taken in two doses to observe their contraceptive efficacy