@misc{indiciae0d1c9bdf5c90,
  title = {The apex cardiogram in left bundle-branch block.},
  author = {D E Santos and A De la Paz and R J Pietras and J R Tobin and R M Gunnar},
  year = {1969},
  doi = {10.1136/hrt.31.6.693},
  url = {https://pubmed.ncbi.nlm.nih.gov/5358149/},
  note = {Source identifier: 5358149}
}