@article{WaltherWesselMalbergetal.2006,
  author    = {T Walther and Niels Wessel and Hagen Malberg and Andreas Voss and H Stepan and R Faber},
  title     = {A combined technique for predicting pre-eclampsia : concurrent measurement of uterine perfusion and analysis of heart rate and blood pressure variability},
  year      = {2006},
}