@article{MacIpe-Costa:162614,
      author        = "MacIpe-Costa,R. and García-Campayo,J. and Gimeno-Feliu,L.
                       and Magallón-Botaya,R. and Armesto-Gomez,J.",
      title         = "{Differences in methylphenidate use between immigrants and
                       spaniards in the child population of Aragon, Spain: A
                       retrospective study}",
      year          = "2011",
}