1. Department of Dermatology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
2. Systemic Autoimmunity Branch, Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, Bethesda, MD, USA.
3. VA Palo Alto Health Care System, Palo Alto, CA, USA.
4. Division of Immunology and Rheumatology, Stanford University School of Medicine, Stanford, CA, USA.
5. Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
6. Department of Plastic and Reconstructive Surgery, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
7. Division of Surgical Research, Department of Surgery, Rhode Island Hospital, Providence, RI, USA.