1 Proactive Care of Older People Undergoing Surgery (POPS), Department of Ageing & Health, Guy's and St Thomas' Hospital, London philip.braude@gstt.nhs.uk.
2 Proactive Care of Older People Undergoing Surgery (POPS), Department of Ageing & Health, Guy's and St Thomas' Hospital, London.
3 Department of Medicine for the Elderly, St Mary's Hospital, Imperial College Healthcare NHS Trust, London.
4 Proactive Care of Older People Undergoing Surgery (POPS), Department of Ageing & Health, Guy's and St Thomas' Hospital, London Division of Health and Social care Research, King's College London.