1. Endocrine Cancer Group, Edinburgh, Scotland
2. UK National External Quality Assessment Scheme, University College London, London, England
3. Department of Histopathology, Nottingham City Hospital, Nottingham, England
4. Department of Histopathology, Beaumont Hospital, Dublin, Ireland
5. Adelaide and Meath Hospital, Dublin, Ireland
6. Department of Histopathology, the RSCH, University of Surrey, Guildford, England
7. Birmingham Heartlands Hospital, Birmingham, England
8. Department of Histopathology, Cardiff & Vale NHS Trust, Cardiff, Wales
9. Department of Pathology, School of Medicine, Cardiff University, Cardiff, Wales