1 Departments of Dermatology and Dermatopathology, Saint-Pierre, Brugmann, and Queen Fabiola Children's University Hospitals, Université Libre de Bruxelles, Brussels, Belgium. Electronic address: kolivras@gmail.com.
2 Metis Inc, San Francisco, California.
3 Departments of Biomedical Engineering, Pathology, and Dermatology, Oregon Health Sciences University, Portland.