Environmental factors and asthma in the child population of Vizcaya

1. Casas Vila, C.
2. Albisu Echeberría, M.V.
3. Salazar Echeverri, M.
4. Ceballos Bizcarret, A.
5. Municio Martín, M.A.
6. Pocheville Guruzeta, I.
7. Albisa Echeberría, J.