Distribution and prognostic validity of the new global initiative for chronic obstructive lung disease grading classification

1. Soriano, J.B.
2. Alfageme, I.
3. Almagro, P.
4. Casanova, C.
5. Esteban, C.
6. Soler-Cataluña, J.J.
7. De Torres, J.P.
8. Martinez-Camblor, P.
9. Miravitlles, M.
10. Celli, B.R.
11. Marin, J.M.