@article{jankovic2008-18344392,
  author  = {Jankovic, J.},
  title   = {{Parkinson's disease: clinical features and diagnosis}},
  journal = {Journal of neurology, neurosurgery, and psychiatry},
  year    = {2008},
  doi     = {10.1136/jnnp.2007.131045},
  pmid    = {18344392},
  url     = {https://doi.org/10.1136/jnnp.2007.131045}
}