@misc{indiciaee3a8cb07cf31,
  title = {Opioids and exercise. An update.},
  author = {G A Sforzo},
  year = {1989},
  doi = {10.2165/00007256-198907020-00003},
  url = {https://pubmed.ncbi.nlm.nih.gov/2537995/},
  note = {Source identifier: 2537995}
}