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父母听力正常,孩子听力就一定正常吗?
在我国,新生儿耳聋的发病率约为1‰-3.47‰,也就是说,一千个新生儿中可能就会有1到3个孩子无法用耳朵听到这个世界的声音。其中,一半以上是由基因突变引起的遗传性耳聋。目前已发现的与耳聋相关的基因大概有200多种,它们通过不同的遗传模式传递给下一代。
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