1. School of Medicine, University of Maryland, Baltimore, Maryland;
2. Biostatistics and Epidemiology Data Analytics Center and Department of Biostatistics, School of Public Health and
3. Department of Pediatrics, School of Medicine, Boston University, Boston, Massachusetts;
4. Department of Health Management and Policy, Dornsife School of Public Health, Drexel University, Philadelphia, Pennsylvania;
5. Hennepin County Medical Center, Minneapolis, Minnesota;
6. Department of Pediatrics, College of Medicine, University of Arkansas for Medical Sciences, Little Rock, Arkansas;
7. Department of Pediatrics, School of Medicine, University of Maryland, Baltimore, Maryland; and
8. RTI International, Research Triangle Park, North Carolina