@misc{indiciaeda2db26d5301,
  title = {["Spirals" and acute salpingitis].},
  author = {K Hagenfeldt and K G Nygren and G Rybo},
  year = {1977},
  url = {https://pubmed.ncbi.nlm.nih.gov/831022/},
  note = {Source identifier: 831022}
}