@misc{indiciaeea37518495ce,
  title = {"PD Plus": is it a new concept?},
  author = {Z J Twardowski and R Khanna and K D Nolph},
  year = {1996},
  doi = {10.1016/s0272-6386(96)90149-3},
  url = {https://pubmed.ncbi.nlm.nih.gov/8712215/},
  note = {Source identifier: 8712215}
}