Cohort profile: The BiCoVac cohort - a nationwide Danish cohort to assess short and long-term symptoms following COVID-19 vaccination. - Jensen CB; Hansen KT; Nielsen CM; Hansen SN; Nielsen H; Rask CU; Fink P; Dantoft TM; Jørgensen T; Bech BH; Thysen SM; Rytter D (European journal of epidemiology, 2025)