@misc{indiciae47b48e4bafee,
  title = {[Improving school health].},
  author = {P Ruuhijärven and H Hultin and T Vellonen},
  year = {1974},
  url = {https://pubmed.ncbi.nlm.nih.gov/4494368/},
  note = {Source identifier: 4494368}
}