China's comparative advantage of low dependency burden will disappear eventually.

中国抚养负担低的比较优势终将消失。

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Background Acute ischemic stroke has led to significant burden of human society, with high rate of mortality and dependency.

急性缺血性脑卒中已成为人类社会的重大疾病负担，具有较高的病死率和致残率。

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