@misc{indiciaea13e8cd5f99a,
  title = {Marginal modeling of nonnested multilevel data using standard software.},
  author = {Diana L Miglioretti and Patrick J Heagerty},
  year = {2006},
  doi = {10.1093/aje/kwk020},
  url = {https://pubmed.ncbi.nlm.nih.gov/17121864/},
  note = {Source identifier: 17121864}
}