1 Department of Pediatrics, Johns Hopkins School of Medicine, and Department of Population, Family, and Reproductive Health, Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland; tcheng2@jhmi.edu.
2 Division of General Pediatrics and Community Health, Children's National Medical Center, Washington, District of Columbia; Department of Pediatrics, George Washington University School of Medicine and Health Sciences, Washington, District of Columbia;
3 Center for Diversity and Health Equity and Division of General Pediatrics, Seattle Children's Hospital, Seattle, Washington; Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington; and.
4 Department of Pediatrics, Howard University, Washington, District of Columbia.