METHODS: 438 patients were classified as 242 CHD group and 196 controls group by selective coronary angiography.

方法：438例冠状动脉造影患者，根据造影结果分为CHD组(242例)和对照组(196例)。

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"There is the danger that the more this power structure, basically,tries to enforce broader controls, becomes more abusive, more selective and more corrupt, it creates the opposition that will eventually destroy it.

VOA: standard.2010.06.11