@misc{indiciae29557b83401a,
  title = {[A modified unit for detecting sleep apnea].},
  author = {J Krause and M Hamm and M Felsmann and H Fabel},
  year = {1989},
  url = {https://pubmed.ncbi.nlm.nih.gov/2608652/},
  note = {Source identifier: 2608652}
}