Zilz C, Blaas SH, Pfeifer M, Jörres RA, Budweiser S. Mental health, serum biomarkers and survival in severe COPD: a pilot study. Multidiscip Respir Med [Internet]. 2016 Feb. 15 [cited 2024 Jul. 7];11(1). Available from: https://mrmjournal.org/index.php/mrm/article/view/265