@article{kiyoshi hasegawa2021factors,
  title={Prognostic factors in patients with recurrent ovarian cancer treated with radiation therapy},
  author={nobuaki kosaka,kiyoshi hasegawa,kaori kiuchi,emi motegi,eyasuo ejima},
  journal={European Journal of Gynaecological Oncology},
  volume={42},
  number={2},
  pages={311--318},
  doi = {10.31083/j.ejgo.2021.02.2288},
  year={2021}
}