@misc{indiciae70f86b492819,
  title = {Letter: Melatonin and menstrual cycle.},
  author = {L Wetterberg and J Arendt},
  year = {1975},
  doi = {10.1016/s0140-6736(75)92939-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/51229/},
  note = {Source identifier: 51229}
}