@misc{indiciae890c8761a2d6,
  title = {Methylxanthines in cardiac contractility.},
  author = {A H Moreno},
  year = {1972},
  doi = {10.1161/01.res.31.5.805},
  url = {https://pubmed.ncbi.nlm.nih.gov/5084887/},
  note = {Source identifier: 5084887}
}