DISCLOSURES
The authors have no conflicts of interest to declare.
REFERENCES
- Bolognia JL, Jorizzo JL, Schaffer JV. Bolognia Textbook of Dermatology. 3rd ed. Spain: Mosby Elsevier publishing; 2012: Ch. 57.
- James WD, Elston DM, Berger TG, Andrews GC. Andrews' Diseases of the Skin: Clinical Dermatology. 12th ed. London: Saunders/ Elsevier, 2011: Ch. 27.
- Jain, S. Dermatology: Illustrated Study Guide and Comprehensive Board Review. New York: Springer, 2012.