Oxygen therapy for COPD is more than 60-70 years old. In this long period,

What is Chronic Bronchitis Cough? Bronchitis is the inflammation of the air

COPD or Chronic Oppressive Pulmonary Disorder is not a single condition. It

The respiratory function is carried out by specialized organs. These organs

Oxygen therapy for COPD is more than 60-70 years old. In this long period,