bibliographicCitation |
Di Marco F, Verga M, Santus P, Morelli N, Cazzola M, Centanni S. Effect of formoterol, tiotropium, and their combination in patients with acute exacerbation of chronic obstructive pulmonary disease: a pilot study. Respir Med. 2006 Nov;100(11):1925–32. doi: 10.1016/j.rmed.2006.03.007. PMID: 16626956. |