@article{k. hoshi2003site,
  title={Placental site trophoblastic tumor: p53 gene analysis},
  author={h. iwamoto,m. nara,m. minai,s. hirata,k. hoshi},
  journal={European Journal of Gynaecological Oncology},
  volume={24},
  number={1},
  pages={25--29},
  doi = {10.12892/ejgo20030125},
  year={2003}
}