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Methods:504 patients with infertility due to one or both fallopian tube obstruction were treated with self made selective fallopian tube recanalization catheter by means of improved technique.
方法：5 0 4例经证实有一侧或双侧输卵管不通的不孕症患者，采用自制选择性输卵管再通导管进行再通。
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