2009 H1N1: Risk factors for hospitalization in a matched case-control study

1. Launes, C.
2. García-García, J.-J.
3. Martínez-Planas, A.
4. Moraga, F.
5. Astigarraga, I.
6. Arístegui, J.
7. Korta, J.
8. Salado, C.
9. Quintana, J.M.
10. Soldevila, N.
11. Domínguez, A.