@misc{indiciae8291d61f13f1,
  title = {British motor neuron disease twin study.},
  author = {A J Graham and A M Macdonald and C H Hawkes},
  year = {1997},
  doi = {10.1136/jnnp.62.6.562},
  url = {https://pubmed.ncbi.nlm.nih.gov/9219739/},
  note = {Source identifier: 9219739}
}