1 Department of Anesthesiology and Critical Care, Perelman School of Medicine, Philadelphia, PA.
2 Department of Anesthesiology, Cardiothoracic Division, Yale University School of Medicine, New Haven, CT.
3 Division of Cardiovascular and Thoracic Anesthesiology, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL.
4 Department of Anesthesiology, Perioperative and Pain Medicine, Division of Cardiothoracic Anesthesiology, Stanford University School of Medicine, Stanford, CA.
5 Department of Anesthesiology, Temple University Hospital/Lewis Katz School of Medicine, Philadelphia, PA.
6 Division of Regional Anesthesiology and Acute Pain Medicine, Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Jacksonville, FL.
7 Department of Anesthesiology and Critical Care, Perelman School of Medicine, Philadelphia, PA. Electronic address: jared.feinman@pennmedicine.upenn.edu.