@article{2a9d1c3c612c44b8afafd68069d325b1,
title = "Excellence and durability: A normally functioning Bj{\"o}rk-Shiley flat-disc prosthesis 42 years post implantation",
author = "Armaan Shaikh and Tajik, {A Jamil}",
note = "Mechanical heart valves have been used worldwide for more than 60 years. While the composition and design of the valves, and the surgical techniques employed to implant them, have changed and advanced over that time, some of the earlier mechanical heart valves showed such great durability that they are still functioning in patients today.",
year = "2016",
month = jan,
day = "1",
language = "American English",
volume = "25",
journal = "Journal of Heart Valve Disease",
number = "2",
}