@misc{indiciae8920d7550178,
  title = {Cusum: a statistical method to evaluate competence in practical procedures.},
  author = {E J Hammond and A K McIndoe},
  year = {1996},
  doi = {10.1093/bja/77.4.562},
  url = {https://pubmed.ncbi.nlm.nih.gov/8942355/},
  note = {Source identifier: 8942355}
}