@misc{indiciaea96fd904dd9d,
  title = {Analysis of prevention program effectiveness with clustered data using generalized estimating equations.},
  author = {E C Norton and G S Bieler and S T Ennett and G A Zarkin},
  year = {1996},
  doi = {10.1037//0022-006x.64.5.919},
  url = {https://pubmed.ncbi.nlm.nih.gov/8916620/},
  note = {Source identifier: 8916620}
}