1. From the Department of Dermatology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX;
2. Departments of Dermatology and Medicine, Baylor University Medical Center, Dallas, TX;
3. Texas Dermatology Associates, Dallas, TX;
4. Division of Dermatopathology, University of Texas Southwestern Medical Center at Dallas, Dallas, TX;
5. Texas Tech Health Science Center, School of Medicine, Lubbock, TX