@article{x. xie2008ovarian,
  title={Primary ovarian choriocarcinoma mimicking ectopic pregnancy managed with laparoscopy - case report},
  author={y.x. chen,j. xu,w.g. lv,x. xie},
  journal={European Journal of Gynaecological Oncology},
  volume={29},
  number={2},
  pages={174--176},
  doi = {10.12892/ejgo200802174},
  year={2008}
}