@article{d. wang2019choriocarcinoma:,
  title={Postpartum choriocarcinoma: a rare case report
and review of literature},
  author={na guo,r. yin,q. li,l. song,d. wang},
  journal={European Journal of Gynaecological Oncology},
  volume={40},
  number={3},
  pages={480--483},
  doi = {10.12892/ejgo4537.2019},
  year={2019}
}