1. Department of Anesthesiology & Critical Care Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
2. Department of Anesthesiology & Critical Care, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA
3. Department of Pediatrics, University of Connecticut School of Medicine, Farmington, CT 06032, USA
4. Center for Behavioral Health, Connecticut Children's Medical Center, Hartford, CT 06106, USA
5. Department of Rheumatology, The Children's Hospital of Philadelphia, Philadelphia, PA 19104, USA
6. Department of Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA 19104, USA