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							Mika Akizuki
														
									Ibaraki Prefecture Itako Public Health Center, Japan
							
						 
						- 
							Kazue Nakagawa
														
									Ibaraki Prefecture Tsuchiura Public Health Center, Japan
							
						 
						- 
							Tatsuya Kato
														
									Ibaraki Prefecture Ryugasaki Public Health Center, Japan
							
						 
						- 
							Tsuyoshi Ogata
														
									Ibaraki Prefecture Itako Public Health Center, Japan Ibaraki Prefecture Tsukuba Public Health Center, Japan
							
						 
						- 
							Yoshikazu Nakamura
														
									Department of Public Health, Jichi Medical School, Japan