@misc{indiciae65843207a8e7,
  title = {Problems, pitfalls, and opportunities in long-term randomized trials.},
  author = {A R Feinstein},
  year = {1989},
  doi = {10.1007/978-3-642-74615-4\_11},
  url = {https://pubmed.ncbi.nlm.nih.gov/2818694/},
  note = {Source identifier: 2818694}
}