@misc{indiciaec64615e87b06,
  title = {Birthing Sphere.},
  author = {Peter Walker and Susan Purdin},
  year = {2004},
  doi = {10.1111/j.0361-3666.2004.00246.x},
  url = {https://pubmed.ncbi.nlm.nih.gov/15186358/},
  note = {Source identifier: 15186358}
}