1. Department of Dermatology; University of Pennsylvania; Philadelphia Pennsylvania
2. Section of Pediatric Dermatology; Department of Pediatrics; Children's Hospital of Philadelphia; Perelman School of Medicine; University of Pennsylvania; Philadelphia Pennsylvania
3. School of Medicine; University of South Carolina; Columbia South Carolina
4. Department of Pediatrics; University of British Columbia; Vancouver British Columbia
5. Department of Dermatology; University of British Columbia; Vancouver British Columbia
6. Division of Plastic Surgery; University of Pennsylvania; Philadelphia Pennsylvania