@article{RetzlaffBauernschmittMalbergetal.2009,
  author    = {Beatrice Retzlaff and Robert Bauernschmitt and Hagen Malberg and Gernot Brockmann and Christian Uhl and Ruediger Lange and J{\"u}rgen Kurths and Georg Bretthauer and Niels Wessel},
  title     = {Depression of cardiovascular autonomic function is more pronounced after mitral valve surgery : evidence for direct trauma},
  doi       = {10.1098/rsta.2008.0272},
  url       = {http://rsta.royalsocietypublishing.org/},
  year      = {2009},
}