@misc{indiciaea11de6123520,
  title = {Functional improvement with long-term levodopa therapy.},
  author = {K M Grainger},
  year = {1973},
  doi = {10.1016/s0140-6736(73)90050-0},
  url = {https://pubmed.ncbi.nlm.nih.gov/4118832/},
  note = {Source identifier: 4118832}
}