Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF ++ NEIL S. PROSE, MD, FAAP ++ Professor of Dermatology and Pediatrics ++ Duke University Medical Center ++ Durham, North Carolina + ++ LEONARD KRISTAL, MD, FAAP ++ Clinical Assistant Professor of Dermatology and Pediatrics ++ Stony Brook University ++ Stony Brook, New York