Data are presented as mean ± standard deviation. GOLD, Global Initiative for Chronic Obstructive Lung Disease; FEV1, forced expiratory volume in 1 s; FVC, forced vital capacity; SVC, slow vital capaci
COPD, chronic pulmonary obstructive disease; Chronic Obstructive Pulmonary Disease (COPD) was classified using the global initiative for chronic obstructive lung disease classification (GOLD), Hepatic
