- 
							Hisashi HIRAKAWA
														
									Department of Surgery Hiraka General Hospital
							 
- 
							Kazushi KOSEKI
														
									Department of Surgery Hiraka General Hospital
							 
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							Yutaka TAKEDA
														
									Department of Surgery Hiraka General Hospital
							 
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							Makoto ARAKAWA
														
									Department of Surgery Hiraka General Hospital
							 
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							Tomio MATSUOKA
														
									Department of Surgery Hiraka General Hospital
							 
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							Takeshi SUGAYA
														
									Department of Surgery Hiraka General Hospital
							 
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							Tsutomu WATANUKI
														
									Department of Pathology Akita University School of Medicine