〇Yuki Arai¹, Masataka Kuroda², Shigeru Saitou² (1. saiseikai utsunomiya hospital, 2. Univ. of Gunma)

〇Lisa To¹, Yoshiaki Tsubokou², Tadashi Okabe³, Atsuhiro Sakamoto⁴ (1. Nippon Medical School , Chiba Hokusoh Hospital, 2. Mitsui Memorial Hospital, 3. Hitachi,Ltd. Hitachinaka General Hospital, 4. Department of Anesthesiology, Nippon Medical School)

〇Mariko Senda¹, Sayaka Kataoka¹, Yoshitora Imaizumi¹, Yoshiyasu Matsuzawa¹ (1. Soka Municipal Hospital)

〇Yuka Ino¹, Yoko Hori¹, Midori Nakashima¹, Tomonori Morita², Hiroaki Kishikawa¹, Atsuhiro Sakamoto¹ (1. Nippon Medical School Department of Anesthesiology, 2. Sakakibara Heart Institute)

〇Shoko Higaki¹, Takaya Hojo¹ (1. Tyokyo Metropolitan Tama Medical Center)

〇Mayumi Echizen¹, Hiroyuki Ito¹, Tokujiro Uchida² (1. Department of Anesthesiology, Tokyo Medical and Dental University, University Hospital of Medicine, 2. Department of Anesthesiology, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University)