@misc{indiciae8964b31876f5,
  title = {beta-Endorphin cerebrospinal fluid decrease in untreated parkinsonian patients.},
  author = {G Nappi and F Petraglia and E Martignoni and F Facchinetti and G Bono and A R Genazzani},
  year = {1985},
  doi = {10.1212/wnl.35.9.1371},
  url = {https://pubmed.ncbi.nlm.nih.gov/2991818/},
  note = {Source identifier: 2991818}
}