@misc{indiciaea6dc2d65a420,
  title = {Primary insomnia: a risk factor to develop depression?},
  author = {Dieter Riemann and Ulrich Voderholzer},
  year = {2003},
  doi = {10.1016/s0165-0327(02)00072-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/12943956/},
  note = {Source identifier: 12943956}
}