1. Department of Anesthesiology and Critical Care Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland, United States
2. Department of Anesthesiology, University of Mississippi Medical Center, Jackson, Mississippi, United States
3. Department of Anesthesiology and Pain Management, University of Texas Southwestern Medical Center, Dallas, Texas, United States
4. Technical Services, Epic Systems Corporation, Verona, Wisconsin, United States
5. Department of Anesthesiology and Pediatrics, Duke University, Durham, North Carolina, United States
6. Department of Anesthesiology, University of Colorado School of Medicine, Aurora, Colorado, United States
7. Department of Anesthesiology, Massachusetts Eye and Ear, Harvard Medical School, Boston, Massachusetts, United States