@article{ref1,
  author = "F. Lacour-Gayet",
  title = "Risk stratification theme for congenital heart surgery",
  year = 2002,
  journal = "Seminars in Thoracic & Cardiovascular Surgery: Pediatric Cardiac Surgery Annual",
  publisher = "Elsevier",
  volume = 5,
  number = 1,
  pages = "148-152",
  month = "Jan",
  doi = "10.1053/pcsu.2002.31502",
  url = "http://dx.doi.org/10.1053/pcsu.2002.31502"
}