1. Adult and Child Consortium for Health Outcomes Research and Delivery Science, School of Medicine, University of Colorado and Children’s Hospital Colorado, Aurora, Colorado;
2. Department of Pediatrics, School of Medicine, University of Colorado, Aurora, Colorado;
3. Department of Pediatrics, University of California at Los Angeles Mattel Children's Hospital and University of California at Los Angeles, Los Angeles, California;
4. Department of Pediatrics, School of Medicine, Indiana University, Indianapolis, Indiana;
5. Department of Medicine Statistics Core, David Geffen School of Medicine, University of California at Los Angeles, Los Angeles, California;
6. Department of Pediatrics, School of Medicine and Dentistry, University of Rochester, Rochester, New York; and
7. Department of Pediatrics, Children’s Mercy Kansas City, Kansas City, Missouri