@misc{indiciaefa711032cced,
  title = {Spirometric reference values in Estonian schoolchildren.},
  author = {J Kivastik and P H Kingisepp},
  year = {2001},
  doi = {10.1046/j.1365-2281.2001.00352.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/11442581/},
  note = {Source identifier: 11442581}
}