1. Department of Pathology The Ohio State University Wexner Medical Center Columbus Ohio USA
2. Department of Pathology University of Pittsburgh Medical Center Pittsburgh Pennsylvania USA
3. Department of Pathology Loyola University Medical Center Maywood Illinois USA
4. Departments of Dermatology and Dermatopathology, School of Medicine Wake Forest University Winston‐Salem North Carolina USA
5. Department of Pathology University of Virginia Health Charlottesville Virginia USA