1. Department of Pathology and Laboratory Medicine Memorial Sloan Kettering Cancer Center New York New York USA
2. Department of Surgery Sinai Health System Toronto Ontario Canada
3. Department of Surgery Memorial Sloan Kettering Cancer Center New York New York USA
4. Institute of Pathology, Erlangen University Hospital, Comprehensive Cancer Center, European Metropolitan Area Erlangen‐Nuremberg Friedrich Alexander University of Erlangen‐Nuremberg Erlangen Germany
5. Department of Pathology University Medical Center Groningen Groningen The Netherlands
6. Department of Pathology Leiden University Medical Center Leiden The Netherlands
7. Department of Laboratory Medicine and Pathology University of Toronto Toronto Ontario Canada