Results:12.8% (11/86) of the patients with COPD showed positive bronchodilation test.

结果：86例COPD患者中有11例支气管舒张试验阳性，阳性率为12 .8% ；

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Results:12.8% (11/86) of the patients with COPD showed positive bronchodilation test.

结果：86例COPD患者中有11例支气管舒张试验阳性，阳性率为12 .8% ；

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