@misc{indiciaea52a5d7905ed,
  title = {Large trials with simple protocols: indications and contraindications.},
  author = {J Lubsen and J G Tijssen},
  year = {1989},
  doi = {10.1016/0197-2456(89)90054-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/2605964/},
  note = {Source identifier: 2605964}
}