1 Division of Cardiothoracic Anesthesiology, Department of Anesthesiology, Columbia University Irving Medical Center, New York, NY. Electronic address: nb2738@cumc.columbia.edu.
2 Division of Cardiothoracic Surgery, Department of Surgery, Columbia University Irving Medical Center, New York, NY.
3 Division of Cardiothoracic Anesthesiology, Department of Anesthesiology, Columbia University Irving Medical Center, New York, NY.