1. Endocrine Surgery; Hammersmith Hospital; London UK
2. Urology; Plymouth Hospitals NHS Trust; Plymouth UK
3. Anaesthesia; St Georges Hospital; London UK
4. Radiology; St Bartholomew's Hospital; London UK
5. Surgery; Newcastle upon Tyne Hospitals NHS Foundation Trust; Newcastle upon Tyne UK
6. Surgery; University of Wales; Cardiff UK
7. Surgery; Aberdeen Hospital; Aberdeen UK
8. Academic Unit of Diabetes, Endocrinology & Metabolism; University of Sheffield; Sheffield UK