COPD was defined according to guidelines Global Initiative for Chronic Obstructive Lung Disease, GOLD, with a post-bronchodilator FEV1/FVC ratio of less than 70%.
La EPOC se definió de acuerdo con directrices Global Initiative for Chronic Obstructive Lung Disease, GOLD, con una relación FEV1/FVC < 70% post broncodilatadora.
A DPOC foi definido de acordo com diretrizes Global Initiative for Chronic Obstructive Lung Disease, GOLD, com uma razão pós-broncodilatador FEV1/FVC < 70%.