@misc{indiciaec1d5dbbecad3,
  title = {[Obstetrical analgesia using Valoron (Tilidine)].},
  author = {W Frerich and R Jeluk},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1186489/},
  note = {Source identifier: 1186489}
}