1. Section of Dermatology Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
2. Department of Child and Adolescent Psychiatry and Behavioral Sciences Children's Hospital of Philadelphia Philadelphia Pennsylvania USA
3. Dermatology Department Instituto Nacional de Pediatría Mexico City Mexico
4. Department of Dermatology Cincinnati Children's Hospital Medical Center Cincinnati Ohio USA
5. Department of Dermatology University of Colorado School of Medicine Aurora Colorado USA
6. Department of Pediatrics University of Colorado School of Medicine Aurora Colorado USA
7. Division of Dermatology and Dermatologic Surgery, Department of Internal Medicine Dell Medical School at the University of Texas at Austin Austin Texas USA
8. Department of Dermatology University of California San Diego San Diego California USA
9. Department Pediatrics University of California San Diego San Diego California USA
10. Pediatric and Adolescent Dermatology Rady Children's Hospital San Diego San Diego California USA
11. Children's Hospital of Philadelphia Research Institute Philadelphia Pennsylvania USA
12. Department of Dermatology Stanford University School of Medicine Redwood City California USA
13. Department of Dermatology Northwestern University Feinberg School of Medicine Chicago Illinois USA
14. Department of Dermatology, Vagelos College of Physicians & Surgeons Columbia University Medical Center New York New York USA
15. Department of Pediatrics, Vagelos College of Physicians & Surgeons Columbia University Medical Center New York New York USA
16. Department of Dermatology University of Massachusetts Medical School Worcester Massachusetts USA
17. Department of Pediatrics University of Massachusetts Medical School Worcester Massachusetts USA
18. National Institutes of Arthritis and Musculoskeletal and Skin Diseases National Institutes of Health Bethesda Maryland USA