1. Department of Pathology University of Virginia Charlottesville Virginia USA
2. Lab Bacchi Botucatu SP Brazil
3. Department of Pathology Memorial Sloan‐Kettering Cancer Center New York New York USA
4. Department of Pathology Columbia University New York New York USA
5. Kempf und Pfaltz Histologische Diagnostik Zurich Switzerland
6. Department of Dermatology University Hospital Zurich Zurich Switzerland
7. Institute of Oncology, Lisbon, Portugal and LDPath London London UK
8. Department of Pathology The Ohio State University Wexner Medical Center Columbus Ohio USA
9. Department of Dermatology University of California San Francisco San Francisco California USA
10. Department of Pathology Yale University New Haven Connecticut USA
11. Department of Pathology Royal Jubilee Hospital Victoria British Columbia Canada
12. Pathology Department Université de Paris, Hôpital Saint‐Louis Paris France