1. National University of Ireland Maynooth; Maynooth University Department of Psychology; Maynooth Co Kildare Ireland
2. University College Cork; Centre of Gerontology and Rehabilitation, School of Medicine; c/o St Finbarr's Hospital Douglas Road Cork Co Cork Ireland
3. Royal Group of Hospitals Trust; Clinical Research Support Centre; 274 Grosvenor Road Belfast Northern Ireland UK BT12 6BA
4. Queen's University Belfast; Centre for Public Health; Mulhouse Building, Royal Group of Hospitals Grosvenor Road Belfast Northern Ireland UK BT12 6BJ