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    					| The Application Effect of Ultrasound-guided Femoral and Sciatic Nerve Block in Anesthesia for Calcaneal Fracture Surgery | 
  					 
  					  										
						| LIU Sheng, SONG Yujuan, ZHANG Zhenghui, WANG Shoufu | 
					 
															
						| First-author's address: Department of Basic Medicine, Heze Medical College, Heze 274000, China | 
					 
										
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