1. Department of Dermatology, Baylor College of Medicine, Houston, Texas
2. Baylor College of Medicine, Houston, Texas
3. Department of Pathology, Michael E. DeBakey VA Medical Center, Houston, Texas
4. School of Medicine, Texas Tech University Health Sciences Center, Lubbock, Texas
5. Department of Dermatology, Michael E. DeBakey VA Medical Center, Houston, Texas