@misc{indiciae3a18ae9022a1,
  title = {Statistical issues in longitudinal studies.},
  author = {R Bellocco and M Pagano},
  year = {1997},
  doi = {10.1016/s0899-9007(97)83074-2},
  url = {https://pubmed.ncbi.nlm.nih.gov/9178299/},
  note = {Source identifier: 9178299}
}