University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust, University College London - University College London Hospitals NHS Foundation Trust and University College London - University College London Hospitals NHS Foundation Trust

affiliation not provided to SSRN, Government of the United Kingdom - National Health Service (NHS), affiliation not provided to SSRN, University College London - University College London Hospitals NHS Foundation Trust, affiliation not provided to SSRN, affiliation not provided to SSRN, Royal National Orthopaedic Hospital NHS Trust, The University of Manchester and University College London - University College London Hospitals NHS Foundation Trust