J Pediatr Hematol Oncol 2013 Nov;35(8):618-22
*Department of Dermatology †Department of Pediatrics ¶Departments of Dermatology and Pediatrics, Columbia University, New York, NY ‡Departments of Dermatology and Pediatrics, Medical College of Wisconsin and Children's Hospital of Wisconsin, Milwaukee, WI §Departments of Pediatrics and Dermatology, University of California San Francisco, San Francisco, CA ∥Department of Pediatrics Cincinnati Children's Hospital and University of Cincinnati, Cincinnati OH.