Mild-to-moderate COPD as a risk factor for increased 30-day mortality in cardiac surgery.
Ried
M
M
Department of Cardiothoracic Surgery, University Medical Center Regensburg, Regensburg, Germany. micha.ried@t-online.de
Unger
P
P
Puehler
T
T
Haneya
A
A
Schmid
C
C
Diez
C
C