Exposure to ambient air pollution during pregnancy and preterm birth: A Spanish multicenter birth cohort study

1. Estarlich, M.
2. Ballester, F.
3. Davdand, P.
4. Llop, S.
5. Esplugues, A.
6. Fernández-Somoano, A.
7. Lertxundi, A.
8. Guxens, M.
9. Basterrechea, M.
10. Tardón, A.
11. Sunyer, J.
12. Iñiguez, C.