@misc{indiciae4301e8a46fa3,
  title = {Problems in follow-up studies.},
  author = {L N Robins},
  year = {1977},
  doi = {10.1176/ajp.134.8.904},
  url = {https://pubmed.ncbi.nlm.nih.gov/879354/},
  note = {Source identifier: 879354}
}