Effectiveness of interventions for managing multiple high-burden chronic diseases in older adults: a systematic review and meta-analysis - Kastner, M; Cardoso, R; Lai, Y; Treister, V; Hamid, J; Hayden, L; Wong, G; Ivers, N; Liu, B; Marr, S; Holroyd-Leduc, J; Straus, S (CMAJ, 2018)