1 Department of Anesthesiology and Perioperative Medicine Heersink School of Medicine University of Alabama Birmingham Birmingham, Alabama dberkowitz@uabmc.edu.
2 Department of Anesthesiology and Perioperative Medicine Heersink School of Medicine University of Alabama Birmingham Birmingham, Alabama.
3 Department of Anesthesiology and Perioperative Medicine Heersink School of Medicine University of Alabama Birmingham Birmingham, Alabama Department of Surgery and Perioperative Care Dell Medical School at The University of Texas at Austin Austin, Texas.