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    					| The Impact of Thoracic Paravertebral Block Combined with General Anesthesia on Cognitive Function in Elderly Patients Undergoing Radical Resection of Lung Cancer | 
  					
  					  										
						| YANG Li, AN Xiaolei, ZHANG Jin | 
					
															
						| First-author's address: Deparment of Anesthesiosion, Xuzhou Municipal Hospital Affiliated to Xuzhou Medical University, Xuzhou 221004, China | 
					
										
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