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							*Tomoyuki USUI
														
									Graduate School of Life and Environmental Sciences, University of Tsukuba
							 
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							Yu ISHIKAWA
														
									Ph.D. Program in Human Biology, School of Integrative and Global Majors, University of Tsukuba
							 
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							Misuzu YAMASHITA
														
									Graduate School of Life and Environmental Sciences, University of Tsukuba
							 
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							Yoshinori KANEMORI
														
									Graduate School of Life and Environmental Sciences, University of Tsukuba
							 
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							Tadashi BABA
														
									Graduate School of Life and Environmental Sciences, University of Tsukuba