@misc{indiciae88d2ac78b520,
  title = {An improved valve rotator.},
  author = {P R Belcher and J McKenna and J N Morrison},
  year = {1997},
  doi = {10.1016/s1010-7940(97)01198-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/9196319/},
  note = {Source identifier: 9196319}
}