@article{y. yokoyama2016case,
  title={A case of ovarian small cell carcinoma of the pulmonary type that was observed as it developed},
  author={r. kumasaka,y. yokoyama,k. fuchinoue,h. mizunuma,r. taniguchi,t. hashimoto,t. oda,t. kusumi},
  journal={European Journal of Gynaecological Oncology},
  volume={37},
  number={5},
  pages={710--713},
  doi = {10.12892/ejgo3050.2016},
  year={2016}
}