1. Department of Pathology; Sahlgrenska University Hospital; Gothenburg Sweden
2. Department of Surgery; Sahlgrenska University Hospital; Gothenburg Sweden
3. Department of Pathology; Sahlgrenska Cancer Center; University of Gothenburg; Gothenburg Sweden
4. Department of Musculosceletal Pathology; Royal Orthopaedic Hospital NHS Trust Foundation and Division of Cancer Studies; Medical School; Birmingham University; Birmingham UK