@article{Librero:56744,
      author        = "Librero, J. and Ibañez-Beroiz, B. and Peiró, S. and
                       Ridao-López, M. and Rodríguez-Bernal, C.L. and
                       Gómez-Romero, F.J. and Bernal-Delgado, E.",
      title         = "{Trends and area variations in Potentially Preventable
                       Admissions for COPD in Spain (2002-2013): A significant
                       decline and convergence between areas}",
      year          = "2016",
}