新型MYCu和MCu Ⅱ功能性宫内节育器放置24个月临床效果观察
신형MYCu화MCu Ⅱ공능성궁내절육기방치24개월림상효과관찰
A clinical comparative study on MYCu and MCu Ⅱ functional intrauterine devices
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