1. Department of Dermatology, Loma Linda University, Loma Linda, CA 92354, USA
2. School of Medicine, Baylor College of Medicine, Houston, TX 77030, USA
3. Departments of Pathology and Dermatology, Geisinger Medical Center, Danville, PA 17822, USA
4. Department of Pathology and Human Anatomy, Loma Linda University, Loma Linda, CA 92354, USA