@misc{indiciae7de8a1fc4859,
  title = {Population at risk.},
  author = {B M Greenwood},
  year = {1990},
  doi = {10.1016/0169-4758(90)90351-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/15463337/},
  note = {Source identifier: 15463337}
}