@misc{indiciaea26cf23a47a8,
  title = {Electrocardiography in chronic bronchitis.},
  author = {C L Shmock},
  year = {1973},
  doi = {10.1378/chest.63.2.148},
  url = {https://pubmed.ncbi.nlm.nih.gov/4265842/},
  note = {Source identifier: 4265842}
}