This corrects the article "The asthma and chronic obstructive pulmonary disease overlap syndrome in tertiary care setting Thailand" on page 227.
Fig. 1.
Diagram classifying patients with isolated asthma, isolated COPD and ACOS according to study definition. COPD, chronic obstructive pulmonary disease; ACOS, asthma and COPD overlap syndrome; BD, bronchodilator; FEV1, forced expiratory volume in 1 second; FVC, forced vital capacity; HRCT, high resolution computed tomography.



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