Ferri's fast facts in dermatology [electronic resource] : a practical guide to skin diseases and disorders / editor, Fred F. Ferri, MD, FACP, Clinical Professor, Warren Alpert Medical School, Brown University, Providence, Rhode Island ; associate editors, James E. Fitzpatrick, MD, Colonel, United States Army (Ret.), Dermatology, Aurora, Colorado, Lori D.Prok, MD, Pediatric Dermatology and Dermatopathology, University of Colorado Denver, Children's Hospital Colorado, Aurora, Colorado.