1. Assistant Professor of Anesthesia, Director, Division of Neurosurgical Anesthesia, Departments of Anesthesia, Radiology, and Respiratory Care Services, University of Pennsylvania, Philadelphia, Pennsylvania
2. Intensive Care Unit Supervisor, Respiratory Care Services, Departments of Anesthesia, Radiology, and Respiratory Care Services, University of Pennsylvania, Philadelphia, Pennsylvania
3. Assistant Professor of Anesthesia, Departments of Anesthesia, Radiology, and Respiratory Care Services, University of Pennsylvania, Philadelphia, Pennsylvania
4. Professor of Radiology, Director, David W. Devon Medical Imaging Center, Departments of Anesthesia, Radiology, and Respiratory Care Services, University of Pennsylvania, Philadelphia, Pennsylvania