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    					| Effect of Fiberoptic Bronchoscope Alveolar Lavage with Ambroxol Hydrochloride Injection on COPD Complicated with Respiratory Failure | 
  					  										
						| LI Siling, YAN Wozhi, LIAO Xiaping | 
															
						| First-author's address: Taishan People's Hospital, Guangdong Province, Taishan 529200, China | 
										
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