@misc{indiciae5a9b8fd42899,
  title = {Multilevel analysis in health services research: a tutorial.},
  author = {Dag Hofoss and Marijke Veenstra and Unni Krogstad},
  year = {2003},
  url = {https://pubmed.ncbi.nlm.nih.gov/14587220/},
  note = {Source identifier: 14587220}
}