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QUESTION
1) A study was performed in 1985 relating the duration of IUD use in infertility. A group of 89 infertile IUD users and a group of 640 control IUD...
1) A study was performed in 1985 relating the duration of IUD use in infertility. A group of 89 infertile IUD users and a group of 640 control IUD users were identified. The women were subdivided by the duration of IUD use
