1 Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania.
2 Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Tufts University School of Medicine, Boston, Massachusetts.
3 Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts.
4 Department of Dermatology, Brigham and Women's Hospital, Boston, Massachusetts; Harvard Medical School, Boston, Massachusetts. Electronic address: ajwatson@bwh.harvard.edu.