@article{bloem2021-33848468,
  author  = {Bloem, B. R. and Okun, M. S. and Klein, C.},
  title   = {{Parkinson's disease}},
  journal = {Lancet (London, England)},
  year    = {2021},
  doi     = {10.1016/s0140-6736(21)00218-x},
  pmid    = {33848468},
  url     = {https://doi.org/10.1016/s0140-6736(21)00218-x}
}