1. Department of Medicine and Pediatrics Residency Program, University of California Los Angeles, Los Angeles, California;
2. Pediatric Pain and Palliative Care Program,
3. Divisions of Pediatric Hematology-Oncology,
4. Pediatric Critical Care,
5. Department of Medicine Statistics Core, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, California; and
6. Biomedical Informatics Program, Clinical and Translational Science Institute, University of Minnesota, Minneapolis, Minnesota
7. Pulmonology and Sleep Medicine, and