Method a random sampling method was carried out to investigate the health human resources situation in rural areas.

方法采用分层随机抽样的方法对乡村卫生人力资源状况进行调查。

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Method a random sampling method was carried out to investigate the health human resources situation in rural areas.

方法采用分层随机抽样的方法对乡村卫生人力资源状况进行调查。

youdao