Inhaled Corticosteroids in Patients with Chronic Obstructive Pulmonary Disease and Risk of Acquiring Streptococcus pneumoniae Infection. A Multiregional Epidemiological Study oleh Heerfordt CK, Eklöf J, Sivapalan P, Ingebrigtsen TS, Biering-Sørensen T, Harboe ZB, Koefod Petersen J, Andersen CØ, Boel JB, Bock AK, Mathioudakis AG, Hurst JR, Kolekar S, Johansson SL, Bangsborg JM, Jarløv JO, Dessau RB, Laursen CB, Perch M, Jensen JUS