1 Department of Anesthesiology, Stony Brook School of Medicine, Stony Brook, New York, timothy.miller2@duke.edu Department of Anesthesiology, Virginia Commonwealth University Health System, Richmond, Virginia, Perelman School of Medicine, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania Department of Surgery, Duke University School of Medicine, Durham, North Carolina Department of Surgery, University of Virginia Health System, Charlottesville, Virginia Department of Anesthesiology, University of Virginia School of Medicine, Charlottesville, Virginia Department of Anesthesiology, Duke University School of Medicine, Durham, North Carolina.