. . "Upon acceptance" . "2016" . . . . . "785823051" . . "International Journal of Chronic Obstructive Pulmonary Disease" . . . . "Int. J. Chronic Obstr. Pulm. Dis." . . . "2006" . . . . . "1178-2005" . . "1176-9106" . "Yes" . "International Journal of Chronic Obstructive Pulmonary Disease" . "3.157" .