1. Department of Dermatology, Johns Hopkins School of Medicine, Baltimore, Maryland
2. now with Department of Dermatology, Brigham and Women’s Hospital, Harvard Medical School, Boston, Massachusetts
3. Peninsula Dermatology, Burlingame, California
4. Department of Dermatology, Division of Molecular and Clinical Medicine, Ninewells Hospital & Medical School, University of Dundee, Dundee, United Kingdom