1 Department of Dermatology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts2Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
2 Department of Dermatology, Brigham and Women's Hospital and Harvard Medical School, Boston, Massachusetts.
3 Department of Biostatistics, Tulane University School of Public Health and Tropical Medicine, New Orleans, Louisiana.