1. Department of Medicine, Ashford and St. Peter’s Hospital NHS Foundation Trust, Surrey KT16 0PZ, UK
2. Department of Medicine, Royal Surrey County Hospital NHS Foundation Trust, Guildford GU2 7XX, UK
3. Department of Trauma and Orthopaedics, Liverpool University Hospitals NHS Foundation Trust, Liverpool L7 8YE, UK
4. Faculty of Medicine, Alexandria University, Alexandria 21321, Egypt
5. Department of Medicine and HIV Metabolic Clinic, Milton Keynes University Hospital NHS Foundation Trust, Eaglestone, Milton Keynes MK6 5LD, UK
6. Department of Geriatric Medicine, Milton Keynes University Hospital NHS Foundation Trust, Eaglestone, Milton Keynes MK6 5LD, UK
7. Honorary Senior Lecturer of the Faculty of Medicine and Health Sciences, University of Buckingham, Buckingham MK18 1EG, UK