@article{h.j. roh2016non-gestational,
  title={Pure non-gestational choriocarcinoma arising in the ovary},
  author={s.h. ahn,h.j. roh,h.j. cho,s.g. you,s.h. lee,y.s. kwon},
  journal={European Journal of Gynaecological Oncology},
  volume={37},
  number={4},
  pages={549--553},
  doi = {10.12892/ejgo3030.2},
  year={2016}
}