@misc{indiciae1c29c0f382e9,
  title = {Normal human sleep: an overview.},
  author = {Max Hirshkowitz},
  year = {2004},
  doi = {10.1016/j.mcna.2004.01.001},
  url = {https://pubmed.ncbi.nlm.nih.gov/15087204/},
  note = {Source identifier: 15087204}
}