1 Department of Anesthesiology and Perioperative Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA. Electronic address: tcios@pennstatehealth.psu.edu.
2 Department of Anesthesiology, University of Vermont, Larner College of Medicine, Burlington, VT.
3 Department of Anesthesiology and Perioperative Medicine, Penn State Health Milton S. Hershey Medical Center, Hershey, PA.