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							Gentaro Kumagai
														
									Department of Orthopaedic Surgery, Hirosaki University
							 
- 
							Kanichiro Wada
														
									Department of Orthopaedic Surgery, Hirosaki University
							 
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							Yohshiro Nitobe
														
									Department of Orthopaedic Surgery, Hirosaki University
							 
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							Kotaro Aburakawa
														
									Department of Orthopaedic Surgery, Hirosaki University
							 
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							On Takeda
														
									Department of Orthopaedic Surgery, Hirosaki University
							 
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							Akira Kurose
														
									Department of Anatomic Pathology, Hirosaki University
							 
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							Yasuyuki Ishibashi
														
									Department of Orthopaedic Surgery, Hirosaki University