1. Department of Dermatology, University of California, San Francisco, San Francisco
2. Department of Rheumatology, Oregon Health and Science University, Portland
3. Division of Dermatology, University of Louisville, Louisville, Kentucky
4. Department of Dermatology, University of Pennsylvania, Philadelphia
5. Department of Dermatology, Philadelphia VA Medical Center, Philadelphia, Pennsylvania
6. Department of Dermatology, Stanford University, Stanford, California
7. Department of Dermatology, Oregon Health and Science University, Portland