@misc{indiciae235ea9b009ae,
  title = {Risk factors for ectopic pregnancy. A population-based study.},
  author = {P A Marchbanks and J F Annegers and C B Coulam and J H Strathy and L T Kurland},
  year = {1988},
  url = {https://pubmed.ncbi.nlm.nih.gov/3343790/},
  note = {Source identifier: 3343790}
}