〇keisuke sumii¹, Rui Kato¹, Hiroko Amatsu¹, Yousuke Mori¹, Yasuhiko Aoyama¹, Yoshiro Kobayashi¹ (1. Tokyo Medical Center)

〇Ryogo Yoshii¹, Shinji Nozuchi^1,3, Ayano Okamoto¹, Hiroshi Takeshita², Yoshito Kunisaki⁴, Akikage Kanbayashi¹ (1. Dept. of anesthesia, Saiseikai Shiga hospital, 2. Spine surgery center, Saiseikai Shiga hospital, 3. Doshisha univ. Faculty of Life and Medical Sciences, 4. Ishida Co.,Ltd. Medical & Pharmaceutical Business Planning Office)

〇yoko ueda¹, katsushi doi¹, tomomune kishimoto¹, noritaka imamathi², youji saitou² (1. National Hospital Organization Hamada Medical Center, 2. Department of Aneshesiology shimane university Faculty of Medicine)

〇Aya Konishi¹, Yoshiyuki Hidaka¹, Munenori Yamada¹, Masahiko Hashimoto¹, Katuyoshi Obata¹, Minobu Ozaki¹ (1. Iizuka hospital)

〇Shinji Nozuchi^1,2, Yuko Nishiwaki¹, Junko Tamura¹, Chiyori Sato¹, Yui Ikuta¹, Yu Okamoto¹ (1. Saiseikai Shiga hospital, 2. Doshisha University Faculty of Life and Medical Sciences)

〇MASAYUKI OKADA¹, MACHIKA MORIYA¹, AYUMI TOSHIMA¹, KAZUE IIZAWA¹, KANEYUKI KAWAMAE¹ (1. Yamagata University Faculty of Medicine )