1. Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, Rochester, Minnesota
2. Departments of Anesthesiology
3. Pediatrics, The Dartmouth Institute, Dartmouth Hitchcock Medical Center, The Geisel School of Medicine at Dartmouth, Lebanon, New Hampshire
4. Department of Anesthesiology and Critical Care, University of Pennsylvania, Philadelphia, Pennsylvania
5. Department of Anesthesiology, University of Florida College of Medicine, Gainesville, Florida
6. Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA