@misc{indiciaed120ccb3ce0f,
  title = {Proton beam therapy.},
  author = {W P Levin and H Kooy and J S Loeffler and T F DeLaney},
  year = {2005},
  doi = {10.1038/sj.bjc.6602754},
  url = {https://pubmed.ncbi.nlm.nih.gov/16189526/},
  note = {Source identifier: 16189526}
}