Forns J, Torrent M, Garcia-Esteban R, Caceres A, Pilar Gomila M, Martinez D, Morales E, Julvez J, Grimalt JO, Sunyer J. Longitudinal association between early life socio-environmental factors and attention function at the age 11 years. Environ Res. 2012 Aug;117:54-9. doi: 10.1016/j.envres.2012.04.007