@misc{indiciae971164060b92,
  title = {Oral contraception using a sequential method. A clinical investigation.},
  author = {B Stenström},
  year = {1968},
  doi = {10.3109/00016346809157498},
  url = {https://pubmed.ncbi.nlm.nih.gov/4890970/},
  note = {Source identifier: 4890970}
}