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    					| Application Study of Nasal High Flow Humidification Oxygen Therapy in the Treatment of Tracheal Intubation and Extubation in Chronic Obstructive Pulmonary Disease Complicated with Type Ⅱ Respiratory Failure | 
  					 
  					  										
						| YANG Wu | 
					 
															
						| First-author's address: Jianyang First Hospital of Nanping, Fujian Province, Nanping 354200, China | 
					 
										
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