1 From the Departments of General Anesthesiology and Outcomes Research, Anesthesiology Institute, Cleveland Clinic, Cleveland, Ohio (H.E.) Department of Anesthesiology, Cleveland Clinic Lerner College of Medicine, Case Western Reserve University, Cleveland, Ohio (H.E.) Department of Anaesthesia, Guy's and St. Thomas' National Health Service Foundation Trust, London, United Kingdom (K.E.-B.) King's College, London, United Kingdom (K.E.-B.) Department of Anaesthesia and Acute Pain Medicine, St. Vincent's Hospital, Melbourne, Australia (M.B.) Melbourne Medical School, Faculty of Medicine, Dentistry and Health Sciences, University of Melbourne, Melbourne, Australia (M.B.).