@article{MendiaraNegredo:60964,
      author        = "Mendiara Negredo, Isabel and Bentayeb Martinez, Karim and
                       Nerín de la Puerta, Cristina and Domeño Recalde, Celia",
      title         = "{Online solid-phase extraction–liquid
                       chromatography–mass spectrometry to determine free
                       sterols in human serum}",
      year          = "2015",
}