All-cause and cause-specific mortality in respiratory symptom clusters: a population-based multicohort study. - Lisik D; Backman H; Kankaanranta H; Basna R; Hedman L; Ekerljung L; Nyberg F; Lindberg A; Wennergren G; Rönmark E; Nwaru B; Vanfleteren L (Respiratory research, 2025)