1. Division of Pediatric Dermatology; Department of Pediatrics; British Hospital of Buenos Aires; Buenos Aires Argentina
2. Department of Dermatology; School of Medicine; University of California at San Francisco; San Francisco California
3. Department of Pediatrics; School of Medicine; University of California at San Francisco; San Francisco California
4. Department of Dermatology; Medical College of Wisconsin; Milwaukee Wisconsin
5. Department of Dermatology; Columbia University; New York New York
6. Department of Pediatrics; Feinberg School of Medicine; Northwestern University; Chicago Illinois
7. Department of Dermatology; Feinberg School of Medicine; Northwestern University; Chicago Illinois
8. Department of Dermatology; Texas Children's Hospital; Baylor College of Medicine; Houston Texas
9. Division of Hematology and Oncology; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
10. Division of Pediatric Dermatology; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
11. Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
12. Section of Dermatology; Children's Mercy Hospital and Clinics; Kansas City Missouri
13. Department of Dermatology; Hospital de la Santa Creu i Sant Pau; Barcelona Spain
14. Department of Pediatrics Dermatology, Dermatology Service, CHU; Sainte-Justine Hospital; Montreal Quebec Canada
15. Department of Dermatology; School of Medicine; Indiana University; Indianapolis Indiana
16. Department of Pediatrics; School of Medicine; Indiana University; Indianapolis Indiana
17. Division of Pediatric Dermatology; Hospital de Pediatria Prof. Dr. JP Garrahan; Buenos Aires Argentina
18. Department of Dermatology; Oregon Health & Science University; Portland Oregon
19. Department of Pediatrics; Oregon Health & Science University; Portland Oregon