@misc{indiciaed1ffb38a5e04,
  title = {Subgroup analysis in clinical trials.},
  author = {David I Cook and Val J Gebski and Anthony C Keech},
  year = {2004},
  doi = {10.5694/j.1326-5377.2004.tb05928.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/15012568/},
  note = {Source identifier: 15012568}
}