The combination of Fluticasone-Salmeterol with Thiotropium improves COPD symptoms but does not reduce exacerbations. Rev Port Med Geral Fam [Internet]. 2007 Sep. 1 [cited 2026 Apr. 18];23(5):650. Available from: https://rpmgf.pt/ojs/index.php/rpmgf/article/view/10416