1. Speciality Doctor in Anaesthesia , University Hospitals of Leicester NHS Trust , Leicester , UK
2. Core Trainee in Anaesthesia , University Hospitals of Leicester NHS Trust , Leicester , UK
3. Specialist Trainee in Anaesthesia , University Hospitals of Leicester NHS Trust , Leicester , UK
4. Consultant in Urological Surgery , University Hospitals of Leicester NHS Trust , Leicester , UK
5. Consultant in Anaesthesia and Pain Medicine, Clinical Research Unit of Pain Medicine, Honorary Senior Lecturer , University of Leicester, University Hospitals of Leicester NHS Trust , Gwendolen Road , Leicester LE5 4PW , UK