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Toshio Ichiwata, Kenzi Uchiyama, Hideyuki Satou, Kiyokazu Kikuchi, Ryosuke Soma, Kenya Koyama, Tokuro Abe, Hiroki Fujiwara, Koshu Nagao. "慢性呼吸器疾患患者に対する運動時の携帯用酸素濃縮器AIRWALK AW-1®の酸素供給効果." Nihon Kokyu Kea Rihabiriteshon Gakkaishi 18.2 (2008) 182-186