@misc{indiciaee0d2d041cee5,
  title = {Practical considerations in abdominal ultrasonic scanning.},
  author = {R J Bartrum},
  year = {1974},
  doi = {10.1056/nejm197411142912006},
  url = {https://pubmed.ncbi.nlm.nih.gov/4606923/},
  note = {Source identifier: 4606923}
}