
Keywords: 6 دقیقه راه رفتن; COPD; Telomeres; Ageing; Asthma; Non-tobacco smoking; COPD; Chronic Obstructive Pulmonary Disease; T/S; Relative Telomere length ratio; qPCR; Quantitative Real Time Polymerase Chain Reaction; FEV1; Forced Expiratory Volume in one second; FVC; Forced Vital