Emphysema presence, severity, and distribution has little impact on the clinical presentation of a cohort of patients with mild to moderate COPD

1. De Torres, J.P.
2. Bastarrika, G.
3. Zagaceta, J.
4. Sáiz-Mendiguren, R.
5. Alcaide, A.B.
6. Seijo, L.M.
7. Montes, U.
8. Campo, A.
9. Zulueta, J.J.