@article{ref1,
author = "C. Mavroudis and J. P. Jacobs",
title = "Congenital heart disease outcome analysis: Methodology and rationale",
year = 2002,
journal = "The Journal of Thoracic and Cardiovascular Surgery",
publisher = "Elsevier",
volume = 123,
number = 1,
pages = "6-7",
month = "Jan",
doi = "10.1053/jtc.2002.v123.p0006",
url = "http://dx.doi.org/10.1053/jtc.2002.v123.p0006"
}