@misc{indiciae5a446009ff7c,
  title = {Electrocardiographic changes in chronic cor pulmonale.},
  author = {K S Mathur and D K Nigam and M C Gupta},
  year = {1968},
  url = {https://pubmed.ncbi.nlm.nih.gov/5761033/},
  note = {Source identifier: 5761033}
}