'Source-specific' air pollution and risk of stroke in Denmark. - Poulsen, Aslak Harbo; Sørensen, Mette; Hvidtfeldt, Ulla Arthur; Brandt, Jørgen; Frohn, Lise Marie; Ketzel, Matthias; Christensen, Jesper H; Im, Ulas; Raaschou-Nielsen, Ole (International Journal of Epidemiology, 2023)