1 The Cardiovascular Research Laboratory, Division of Cardiology, Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.
2 Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.
3 Department of Anesthesiology and Perioperative Medicine, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.