1. Section on Adolescent/Young Adult Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
2. Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
3. Johns Hopkins International STD Laboratory, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
4. Division of Pediatric Emergency Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland
5. Department of Adult Emergency Medicine, Johns Hopkins University School of Medicine, Baltimore, Maryland
6. Division of General Pediatrics and Adolescent Medicine, Department of Pediatrics, Johns Hopkins University School of Medicine, Baltimore, Maryland