Cardiovascular event classification in the very old: how accurate and how complete?

@article{Heckbert1997CardiovascularEC,
  title={Cardiovascular event classification in the very old: how accurate and how complete?},
  author={Susan R. Heckbert and Andrea Z LaCroix},
  journal={Epidemiology},
  year={1997},
  volume={8 5},
  pages={473-4}
}