Known-groups validity of the Long-Term Conditions Questionnaire (LTCQ): a measure for potential use in integrated care - Potter, CM; Batchelder, L; Geneen, L; Fox, D; Kelly, L; Gibbons, E; Jenkinson, C; Jones, K; Forder, J; Fitzpatrick, R; Peters, M (QUALITY OF LIFE RESEARCH, 2017)