1. Department of Dermatology; School of Medicine; Stanford University; Stanford California
2. Division of General and Community Pediatrics; Cincinnati Children's Hospital Medical Center; Cincinnati Ohio
3. Departments of Dermatology and Pediatrics; Feinberg School of Medicine; Northwestern University; Chicago Illinois
4. Department of Dermatology; School of Medicine; University of Colorado; Aurora Colorado
5. Department of Dermatology; Hospital for Sick Children and University of Toronto; Toronto Ontario Canada
6. Department of Dermatology; Columbia University Medical Center; New York New York
7. Department of Pediatrics; Columbia University Medical Center; New York New York
8. Department of Dermatology; Dell Children's Medical Center of Central Texas; Austin Texas
9. Department of Dermatology; University of Rochester Medical Center; Rochester New York