@misc{indiciaeea8b16e8f502,
  title = {Combined spinal and extradural anesthesia.},
  author = {M Patel},
  year = {1992},
  doi = {10.1213/00000539-199210000-00044},
  url = {https://pubmed.ncbi.nlm.nih.gov/1530188/},
  note = {Source identifier: 1530188}
}