@misc{indiciae33ddf89bfa8d,
  title = {Prolonged decrease in heart rate variability after elective hip arthroplasty.},
  author = {S C Marsch and K Skarvan and H G Schaefer and B Naegeli and R Paganoni and I Castelli and D Scheidegger},
  year = {1994},
  doi = {10.1093/bja/72.6.643},
  url = {https://pubmed.ncbi.nlm.nih.gov/8024911/},
  note = {Source identifier: 8024911}
}