@misc{indiciae42caa645a7aa,
  title = {[Natural family planning (symptothermal method) and objective ovulation parameters--a pilot study].},
  author = {G Freundl and D Suberg and A M Flynn and H P Diemer},
  year = {1984},
  doi = {10.1055/s-2008-1036680},
  url = {https://pubmed.ncbi.nlm.nih.gov/6378714/},
  note = {Source identifier: 6378714}
}