1. Meharry Medical College Nashville Tennessee USA
2. Department of Biostatistics Vanderbilt University School of Medicine and Vanderbilt University Medical Center Nashville Tennessee USA
3. Department of Pediatrics, Division of Hospital Medicines Vanderbilt University School of Medicine and Vanderbilt University Medical Center Nashville Tennessee USA
4. Department of Pediatrics University of Utah School of Medicine Salt Lake City Utah USA
5. Department of Emergency Medicine Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
6. Department of Health Policy Vanderbilt University Medical Center Nashville Tennessee USA