Pediatr Dermatol 2014 May-Jun;31(3):402-4. Epub 2012 Sep 3.
Baylor College of Medicine, Houston, TexasDepartment of Dermatology, School of Medicine, Stanford University, Palo Alto, CaliforniaDepartment of Pediatrics, School of Medicine, Stanford University, Palo Alto, CaliforniaDepartment of Dermatology, Mayo Clinic, Rochester, MinnesotaDepartments of Dermatology and Pediatrics, School of Medicine, University of Colorado, Denver, Colorado.