@article{Ramírez:130852,
      author        = "Ramírez, Julia and Laguna, Pablo and Bayés de Luna,
                       Antonio and Malik, Marek and Pueyo, Esther",
      title         = "{QT/RR and T-peak-to-end/RR curvatures and slopes in
                       chronic heart failure: Relation to sudden cardiac death}",
      year          = "2014",
}