DOI:
10.1055/s-00000011
DMW - Deutsche Medizinische Wochenschrift
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References
Woodruff PG, Barr RG, Bleecker E. et al.
Clinical Significance of Symptoms in Smokers with Preserved Pulmonary Function.
N Engl J Med 2016;
374 (19) 1811-1821 . doi:10.1056/NEJMoa1505971
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