Temporal transitions in COPD severity stages within the GOLD 2017 classification system

1. Soriano, J.B.
2. Hahsler, M.
3. Soriano, C.
4. Martinez, C.
5. de-Torres, J.P.
6. Marín, J.M.
7. de Lucas, P.
8. Cosio, B.G.
9. Fuster, A.
10. Casanova, C.