1. Department of Plastic Surgery, University Hospital North Midlands NHS Foundation Trust, Stoke-on-Trent, Staffordshire, United Kingdom
2. Department of Geriatrics, Guys and St Thomas' NHS Foundation Trust, London, United Kingdom
3. University of Birmingham Medical School, Birmingham, United Kingdom
4. Academic Plastic Surgery Group, Blizard Institute, Barts and the London School of Medicine and Dentistry, London, United Kingdom