@misc{indiciae89a309cd97b1,
  title = {PCA--not as effective but still a valuable method.},
  author = {M Rosen},
  year = {1998},
  doi = {10.1097/00000542-199806000-00046},
  url = {https://pubmed.ncbi.nlm.nih.gov/9637673/},
  note = {Source identifier: 9637673}
}