Jeon, E., Kim, D. H., Park, H., Lee, J., Heo, E. Y., Lee, C. H., Kim, D. K., Lee, H. W. (2026). Prolonged expiratory time constant and risk of moderate-to-severe exacerbations in stable COPD. Scientific Reports. https://doi.org/10.1038/s41598-026-39987-2