1. Department of Pathology, The Ohio State University Wexner Medical Center, Columbus, OH;
2. Departments of Dermatology and Dermatopathology, Mount Sinai Medical Center, New York, NY;
3. Department of Dermatopathology, Mount Sinai Medical Center, New York, NY;
4. Department of Pathology. Mayo Clinic Medical Center, Mayo Clinic, Rochester, MN; and
5. Department of Pathology & Microbiology, University of Nebraska Medical Center, Nebraska Medical Center, Omaha, NE