Smith, SC; Lamping, DL; Banerjee, S; Harwood, R; Foley, B; Smith, P; Cook, JC; Murray, J; Prince, M; Levin, E; +2 more... Mann, A; Knapp, M; (2005) Measurement of health-related quality of life for people with dementia: development of a new instrument (DEMQOL) and an evaluation of current methodology. Health technology assessment (Winchester, England), 9 (10). 1-93, iii-iv. ISSN 1366-5278 https://researchonline.lshtm.ac.uk/id/eprint/13685