Objective To evaluate the value of in vitro fertilization and embryo transfer (IVF ET) in the treatment of infertility.
目的评价体外授精胚胎移植（IVF ET）治疗不孕症的价值。
In industrial countries, the best-known current treatment for infertility is a process called in vitro fertilization.
在先进的工业国家，最有效治疗不育的方法就是试管婴儿。
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