Affiliation: | 1. The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA;2. Albert Einstein College of Medicine, Bronx, New York, USA;3. Blood and Marrow Transplant Program, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA;4. The Perelman School of Medicine at the University of Pennsylvania, Philadelphia, Pennsylvania, USA Section of Pediatric Dermatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania, USA |