Chronic Obstructive Pulmonary Disease
Living with COPD: American Lung Association
https://www.lung.org/lung-health-and-diseases/lung-disease-lookup/copd/living-with-copd/
COPD Symptoms and Causes: Mayo Clinic
https://www.mayoclinic.org/diseases-conditions/copd/symptoms-causes/syc-20353679
Chronic Obstructive Pulmonary Disease: Centers for Disease Control and Prevention
https://www.cdc.gov/copd/index.html
Chronic Obstructive Pulmonary Disease: Chest and Lungs
https://patient.info/chest-lungs/chronic-obstructive-pulmonary-disease-leaflet
COPD and Emphysema: University of Michigan Medicine
https://www.uofmhealth.org/conditions-treatments/pulmonary/copd-emphysema
Chronic Obstructive Pulmonary Disease: National Jewish Health
https://www.nationaljewish.org/conditions/copd-chronic-obstructive-pulmonary-disease
Chronic Obstructive Pulmonary Disease and Mesothelioma
https://mesothelioma.net/chronic-obstructive-pulmonary-disease/