@article{Perales:100719,
      author        = "Perales A. and Delgado J. L. and Calle M. de la and
                       García Hernández J. A. and Escudero A. I. and Campillos 
                       J. M. and Sarabia M.D. and Laíz, B. and Duque, M. and
                       Navarro, M. and Calmarza, P. and Hund, M. and Álvarez,
                       F.V.",
      title         = "{sFlt-1/PlGF for prediction of early-onset pre-eclampsia:
                       STEPS (Study of early pre-eclampsia in Spain)}",
      year          = "2017",
}