@misc{indiciae51dae909f598,
  title = {Initial validation of the SLEEP-50 questionnaire.},
  author = {Victor I Spoormaker and Ingrid Verbeek and Jan van den Bout and Ed C Klip},
  year = {2005},
  doi = {10.1207/s15402010bsm0304\_4},
  url = {https://pubmed.ncbi.nlm.nih.gov/16190812/},
  note = {Source identifier: 16190812}
}