1. Dermatology Service, Department of Veterans Affairs Medical Center, University of California, San Francisco2Department of Dermatology, University of California, San Francisco
2. Department of Dermatology, Yonsei University, Wonju College of Medicine, Wonju, South Korea
3. Department of Dermatology and Venereology, Medical University of Innsbruck, Innsbruck, Austria
4. Department of Dermatology, University of California, San Francisco5Department of Pediatrics, University of California, San Francisco
5. Department of Dermatology, Yale University, New Haven, Connecticut7Department of Pathology, Yale University, New Haven, Connecticut
6. Division of Dermatology, University of Washington, Seattle