@misc{indiciaed771509febce,
  title = {The relational database model and multiple multicenter clinical trials.},
  author = {B A Blumenstein},
  year = {1989},
  doi = {10.1016/0197-2456(89)90004-4},
  url = {https://pubmed.ncbi.nlm.nih.gov/2691206/},
  note = {Source identifier: 2691206}
}