1. Section of Dermatology; Department of Pediatrics; Children's Hospital of Philadelphia; Philadelphia PA USA
2. Division of Infectious Diseases; Department of Pediatrics; Children's Hospital of Philadelphia; Philadelphia PA USA
3. Division of Infectious Diseases; Department of Pediatrics; Children's Mercy Hospitals & Clinics and University of Missouri-Kansas City; Kansas City MO USA
4. Ronald O. Perelman Department of Dermatology; New York University; New York NY USA