1. Section of Dermatology Children's Hospital of Philadelphia Philadelphia PennsylvaniaUSA
2. Perelman School of Medicine at the University of Pennsylvania Philadelphia PennsylvaniaUSA
3. The Wharton School University of Pennsylvania Philadelphia PennsylvaniaUSA
4. Departments of Pediatrics and Dermatology Perelman School of Medicine at the University of Pennsylvania Philadelphia PennsylvaniaUSA
5. Department of Pediatrics Children's Hospital of Philadelphia Philadelphia PennsylvaniaUSA