@misc{indiciae208d8d29058f,
  title = {The umbilicus in laparoscopic surgery.},
  author = {A J Voitk and S G Tsao},
  year = {2001},
  doi = {10.1007/s00464-001-0002-x},
  url = {https://pubmed.ncbi.nlm.nih.gov/11443473/},
  note = {Source identifier: 11443473}
}