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| Clinical Observation of Salmeterol Xinafoate and Fluticasone Propionate Assisted Nasal High Flow Oxygen Therapy in the Treatment of Acute Exacerbation of COPD Complicated with Type Ⅱ Respiratory Failure |
| MA Awei, WANG Yanxia, SHANG Quanzhen |
| First-author's address: Hospital of the Third Division of Xinjiang Production and Construction Corps, Kashi 844000, China |
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