@misc{indiciae7d11d4c6bef7,
  title = {Letter: Measuring cardiac contractility.},
  author = {S Rodbard},
  year = {1975},
  doi = {10.1016/s0140-6736(75)91336-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/46564/},
  note = {Source identifier: 46564}
}