1. Department of Cellular Pathology, Cardiff and Vale University Health Board, and Cardiff University, University Hospital of Wales, Cardiff, United Kingdom
2. Department of Pathology and Laboratory Medicine, University of British Columbia, and Vancouver General Hospital, Vancouver, British Columbia, Canada
3. Department of Biopathology, Léon-Bérard Cancer Centre, Lyon, France
4. Department of Cellular Pathology, Cardiff and Vale University Health Board, Cardiff, United Kingdom
5. Department of Pathology, Duke University Medical Center, Durham, North Carolina