1. Department of Pathology, Queen Alexandra Hospital; University of Portsmouth; Portsmouth United Kingdom
2. Hospital of the University of Pennsylvania, Perelman School of Medicine; Philadelphia Pennsylvania
3. Cytopathology Section, Division of Anatomic Pathology and Histology; Catholic University, Foundation Agostino Gemelli University Hospital; Rome Italy
4. Royal Victoria Infirmary, Newcastle Upon Tyne Hospitals National Health Service Foundation Trust; Newcastle Upon Tyne United Kingdom
5. Institute of Pathology; University Hospital; Lausanne Switzerland
6. Division of Endocrinology; Catholic University, Foundation Agostino Gemelli University Hospital; Rome Italy
7. Department of Pathology, Cochin Hospital; University Paris Centre; Paris France