@misc{indiciae1208720070d0,
  title = {Directed biopsy using a small endoscope: thoracoscopy and peritoneoscopy simplified.},
  author = {S R Ash and F Manfredi},
  year = {1974},
  doi = {10.1056/nejm197412262912608},
  url = {https://pubmed.ncbi.nlm.nih.gov/4279337/},
  note = {Source identifier: 4279337}
}