1. Chronic obstructive pulmonary disease: an overview;Devine JF;Am Health Drug Benefits,2008
2. Chronic obstructive pulmonary disease;Agarwal AK,2024
3. Diffusing capacity of carbon monoxide in assessment of COPD;Balasubramanian A;Chest,2019
4. Diffusing capacity of the lungs for carbon monoxide;Modi P,2024
5. Lung Diffusion Testing (DLCO). Accessed. January 23, 2024: https://my.clevelandclinic.org/health/diagnostics/15445-dlco.