Affiliation: | aDepartment of Anesthesiology, Shin Kong Wu Ho-Su Memorial Hospital, Taipei, Taiwan;bGraduate Institute of Medical Sciences, College of Medicine, Taipei Medical University, Taipei, Taiwan;cDepartment of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan;dDrug Abuse Research Center and Department of Anesthesiology, Wan-Fang Hospital, Taipei Medical University, Taipei, Taiwan |