BiPAP呼吸机治疗COPD合并Ⅱ型呼吸衰竭56例疗效观察
BiPAP호흡궤치료COPD합병Ⅱ형호흡쇠갈56례료효관찰
Observation on the effect of type Ⅱ respiratory failure from COPD treated with BiPAP breathing machine
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