
Keywords: ظرفیت پخش ریه برای مونوکسید کربن; ATS; American Thoracic Society; COPD; chronic obstructive pulmonary disease; Dlco; diffusing capacity of lung for carbon monoxide; ERS; European Respiratory Society; FEV1; forced expiratory volume in the first second; FVC; forced vital capacity; LLN; lowe