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    					| Differential Diagnostic Value of Trans-scrotal and Rectal Ultrasonography Combined with Serum AMH Detection in Obstructive and Nonobstructive Azoospermia | 
  					
  					  										
						| WANG Fang, CAO Chengzhi, YUAN Jiantao | 
					
															
						| First-author's address: Department of Ultrasound, Xianning First People's Hospital, Xianning 437000, China | 
					
										
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