@misc{indiciae5731ef0314bb,
  title = {[Warning systems: a priority in epidemiological surveillance].},
  author = {R Valencia and E Román and F J García-León and J Guillén},
  doi = {10.1016/s0213-9111(03)71801-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/14670261/},
  note = {Source identifier: 14670261}
}