@misc{indiciae72a93c1ed04f,
  title = {Surrender to gravity.},
  author = {J A Hopkins},
  year = {1968},
  doi = {10.1093/ptj/48.8.862},
  url = {https://pubmed.ncbi.nlm.nih.gov/5667880/},
  note = {Source identifier: 5667880}
}