1. Department of Anesthesiology, Walter Reed National Military Medical Center, Bethesda, Maryland
2. Department of Anesthesiology, Dwight D. Eisenhower Army Medical Center, Augusta, Georgia
3. Department of Pediatric Cardiology, INOVA LJ Murphy Children’s Hospital Fairfax, Falls Church, Virginia
4. Department of Anesthesiology, INOVA Fairfax, Falls Church, Virginia
5. Department of Anesthesiology, Perioperative and Pain Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts.