1 From the Department of Anesthesiology, University of Minnesota School of Medicine, Minneapolis, Minnesota; Department of Anesthesiology, Twin Cities Hospital of Niceville, Niceville, Florida; Departments of Anesthesiology and Medicine, University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin; Department of Anesthesiology, Mayo Clinic College of Medicine, Jacksonville, Florida; Department of Anesthesiology, University of Arizona, Tucson, Arizona; Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida; Department of Anesthesia/Critical Care Services, NorthShore HealthSystem, Chicago, Illinois; University of Chicago Pritzker School of Medicine, Chicago, Illinois; Department of Anesthesia and Perioperative Care and Medicine, University of California-San Francisco School of Medicine, San Francisco, California; Department of Anesthesiology, Mayo Clinic, Rochester, Minnesota; and Department of Anesthesia and Critical Care, University of Chicago, Chicago, Illinois.