1 Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston; Medical Practice Evaluation Center, Mongan Institute, Massachusetts General Hospital, Boston. Electronic address: efreeman@mgh.harvard.edu.
2 Department of Dermatology, Massachusetts General Hospital, Harvard Medical School, Boston.
3 Department of Dermatology, St. Louis University, Missouri.
4 Department of Dermatology, University of Pennsylvania, Philadelphia.
5 Department of Dermatology, University Hospital, Munich University of Ludwig Maximilian, Germany.
6 Department of Dermatology, University of California-San Francisco.
7 Department of Dermatology, University of California-San Francisco; Department of Immunology and Microbiology, University of California-San Francisco.