〇Honami Sato¹, Atsushi Kurosawa², Yuka Eto¹, Shota Miwa¹, Akihito Tampo¹ (1. Nayoro City General Hospital, 2. Asahikawa Medical University Hospital)

〇Kazuyoshi Tateoka¹, Wataru Sakai², Yuta Ikeshima³, Akio Yamagishi⁴, Hitoshi Namba⁵, Takahiro Ichimiya⁵ (1. Nayoro City General Hospital, 2. Japanese Red Cross Kitami Hospital, 3. Muroran City General Hospital, 4. Moriyama Hospital, 5. Asahikawa City Hospital)

〇Akio Oketani¹, Kohki Nishikawa², Keishi Tamashiro¹, Tomoya Ito³, Yuki Shimodate², Michiaki Yamakage⁴ (1. Nikko Memorial Hospital, 2. Muroran City General Hospital, 3. Hakodate Municipal Hospital, 4. Sapporo Medical University School of Medicine Department of Anethesiology)

〇Yudai Iwasaki¹, Tokiya Ishida², Hideyuki Yokoyama², Kazuaki Shinohara², Yoshihumi Kumada² (1. Saitama Medical Center, Jichi Medical University, 2. Ohta Nishinouchi Hospital)

〇yuusuke hashidume¹, ryu miyashita¹, huminori tobise¹, mako aimono¹, iwao kobayashi¹, shinzou sumita¹ (1. Department of Anesthesiology, Asahikawa Red Cross Hospital)