1. Columbia University Vagelos College of Physicians and Surgeons New York New York
2. Department of DermatologyColumbia University Irving Medical Center New York New York
3. Department of PathologyColumbia University Irving Medical Center New York New York
4. Department of Pathology and Laboratory MedicineDartmouth‐Hitchcock Medical Center Lebanon New Hampshire
5. Geisel School of Medicine at Dartmouth Hanover New Hampshire