1. Department of Dermatology; University of California; Irvine, California
2. Department of Dermatology; San Antonio Military Medical Center; San Antonio Texas
3. Dermatology Department, Kasralainy Faculty of Medicine; Cairo University; Egypt
4. Department of Biostatistics and Cancer Epidemiology; National Cancer Institute, Cairo University; Cairo Egypt
5. Department of Internal Medicine; Texas Tech University Health Sciences Center; Odessa Texas
6. Dermatopathology Service; MD Anderson Cancer Center; Houston Texas
7. Department of Dermatology and Dermatologic Surgery; Medical University of South Carolina; Charleston South Carolina