1. Department of Anesthesiology and Critical Care Medicine, Jichi Medical University Saitama Medical Center, Saitama, Japan, Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan, E-mail:
2. Oku Medical Clinic, Osaka, Japan, Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan
3. Division of Anesthesia, Mitsui Memorial Hospital, Tokyo, Japan, Scientific Research WorkS Peer Support Group (SRWS-PSG), Osaka, Japan