1. Harvard Medical School, Boston, Massachusetts
2. Section of Dermatology, Department of Medicine, Carilion Clinic, Roanoke, Virginia
3. Division of Hematology and Oncology, Department of Medicine, Beth Israel Deaconess Medical Center, Boston, Massachusetts
4. Clinical Laboratory for Epidemiology and Applied Research in Skin (CLEARS), Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
5. Department of Dermatology, Harvard Medical School, Boston, Massachusetts