Isolated, reduced diffusing capacity for carbon monoxide in the population – relations to symptoms, smoking and comorbidities - Viktor Hamrefors; Johan Westerbergh; Annelie Behndig; Anders Blomberg; John Brandberg; Anna Carlén; Arne Egesten; Emil Ekbom; Össur Ingi Emilsson; Maria J. Eriksson; Andreas Frølich; Ludger Grote; et al. (BMC Pulmonary Medicine, 2026)