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Understanding the 4 Stages of COPD - 1stclassmed.com
COPD Stage 1 (Mild) Stage 1 COPD is where you want to catch the disease to be diagnosed.However, due to the lack of symptoms it often goes undiagnosed until a later stage. The main reason stage 1 COPD symptoms go unnoticed is because according to GOLD guidelines, stage 1 COPD patients still have an FEV1 of 80% or higher.
1stclassmed.com Alternatives
lunginstitute.com - Stages of COPD: Mild through End-Stage COPD | Lung Institute
