@article{ref1, author = "C. Mavroudis and M. Gevitz and M. J. Elliott and J. P. Jacobs and J. P. Gold", title = "Virtues of a worldwide congenital heart surgery database", year = 2002, journal = "Seminars in Thoracic \& Cardiovascular Surgery: Pediatric Cardiac Surgery Annual", publisher = "Elsevier", volume = 5, number = 1, pages = "126-131", month = "Jan", doi = "10.1053/pcsu.2002.31504", url = "http://dx.doi.org/10.1053/pcsu.2002.31504" }