1. Department of Anesthesiology and Critical Care, Perelman School of Medicine, University of Pennsylvania and Children’s Hospital of Philadelphia, Philadelphia, Pennsylvania;
2. Divisions of Pediatric Critical Care Medicine and Pediatric Bioethics, University of Washington, Seattle, Washington;
3. Treuman Katz Center for Pediatric Bioethics, Seattle Children’s Hospital, Seattle, Washington; and
4. Department of Pediatrics, University of California, San Diego, San Diego, California