@misc{indiciae168f9a2e4850,
  title = {Graded compression sonography in acute appendicitis.},
  author = {R A Niekel and L E Lampmann},
  year = {1986},
  doi = {10.1055/s-2008-1048968},
  url = {https://pubmed.ncbi.nlm.nih.gov/3022347/},
  note = {Source identifier: 3022347}
}