<https://studysciences.com/chronic-obstructive-pulmonary-disorder-copd/#schema-9538>
<http://schema.org/description>
"Chronic obstructive pulmonary disorder or COPD is a group of lung diseases that are progressive. Having this disease makes it hard to breathe."
<https://studysciences.com/chronic-obstructive-pulmonary-disorder-copd/>