@misc{indiciae0b4ada645685,
  title = {Quantifying biases in causal models: classical confounding vs collider-stratification bias.},
  author = {Sander Greenland},
  year = {2003},
  url = {https://pubmed.ncbi.nlm.nih.gov/12859030/},
  note = {Source identifier: 12859030}
}