@misc{indiciaeec4a9138d4c3,
  title = {Estonian efficiency.},
  author = {Tom Parfitt},
  doi = {10.1016/s0140-6736(04)17292-9},
  url = {https://pubmed.ncbi.nlm.nih.gov/15505894/},
  note = {Source identifier: 15505894}
}