1. 1Department or Anesthesiology, University of Colorado, Children’s Hospital Colorado, Aurora, Colorado.
2. 2Department or Anesthesiology, University of Colorado, Children’s Hospital Colorado, Aurora, Colorado.
3. 3Department of Otolaryngology, University of Colorado, Children’s Hospital Colorado, Aurora, Colorado.
4. 4Department of Otolaryngology, University of Colorado, Children’s Hospital Colorado, Aurora, Colorado.