Affiliation: | 1. Department of Anesthesiology and Intensive Care Medicine, Osaka University Graduate School of Medicine, Suita, 2–2 Yamadaoka, Suita City, Osaka 565–0871, Japan;2. Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, 2–2 Yamadaoka, Suita City, Osaka 565–0871, Japan;1. Department of Anesthesia, Sunnybrook Health Sciences Center, Toronto, Ontario, Canada;2. Department of Orthopedics, Holland Orthopedic and Arthritic Institute, Toronto, ON, Canada |