Why is COPD worse at night?

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Tags

1. #respiratory
2. #inhalers
3. #increase
4. #problem
5. #asthma
6. #quality
7. #often
8. #disease
9. #frequent
10. #symptoms
11. #worsen
12. #sleep
13. #waking
14. #night
15. #rescue
16. #people
17. #worse
18. #throughout
19. #apnea