@article{fine1999,
  title={A Proportional Hazards Model for the Subdistribution of a Competing Risk},
  author={Jason P. Fine and Malcolm H. Ray},
  year={1999},
  journal={Journal of the American Statistical Association},
  doi={10.1080/01621459.1999.10474144},
  url={https://doi.org/10.1080/01621459.1999.10474144}
}