1. Department of Dermatology, Massachusetts General Hospital, Boston, Massachusetts;
2. Harvard Medical School, Boston, Massachusetts;
3. David Geffen School of Medicine at UCLA, Los Angeles, California;
4. Department of Dermatology, University of Minnesota, Minneapolis, Minnesota;
5. Veteran's Affairs Medical Center, Minneapolis, Minnesota;
6. Robert Wood Johnson Medical School, New Brunswick, New Jersey;
7. Sadick Dermatology, New York, New York;
8. Weill Cornell Medical College, New York, New York