@article{smith2013balloon,
  title = {Balloon dilators for labor induction: a historical review},
  author = {James Andrew Smith},
  year = {2013},
  researchr = {https://researchr.org/publication/smith2013balloon},
  cites = {0},
  citedby = {0},
  journal = {Journal of medical ethics and history of medicine},
  volume = {6},
}