1. Preliminary Internal Medicine Program, Internal Medicine Department, University of Texas Health Science Center at San Antonio, San Antonio, Texas
2. Tulane Dermatology Program, Dermatology Department, Tulane University School of Medicine, New Orleans, Louisiana
3. Dermatology Department, Harvard Medical School, Clinical Laboratory for Epidemiology and Applied Research in Skin, Boston, Massachusetts
4. Department of Dermatology, Beth Israel Deaconess Medical Center, Boston, Massachusetts
5. Department of Medicine, Carilion Clinic, Section of Dermatology, Roanoke, Virginia
6. Dermatology Department, Virginia Tech-Carilion School of Medicine, Roanoke, Virginia