Affiliation: | (1) Department of Anesthesiology, Tokushima University School of Medicine, 2-50-1 Kuramoto-cho, 770 Tokushima, Japan;(2) Department of Anesthesiology, Komatsushima Red Cross Hospital, 28-1 Shingai, Chuden-cho, Komatsushima, 773 Tokushima, Japan |