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    					| Diagnostic Value of Color Doppler Ultrasound Combined with miR-222 and miR-21 in Senile Degenerative Heart Valvular Disease | 
  					 
  					  										
						| WEI Qing, YE Rilan | 
					 
															
						| First-author's address: Department of Ultrasound, Longnan First People's Hospital, Longnan 341700, China | 
					 
										
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															    																	Received: 02 December 2023
																	    
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