@article{t. shigematsu2003of,
  title={Identification of chemotherapeutic refractory cases based on human chorionic gonadotropin values among patients with low-risk persistent trophoblastic disease treated with 8-day methotrexate-folinic acid},
  author={t. shigematsu,t. hirakawa,h. yahata,t. sonoda,n. kinukawa,h. nakano},
  journal={European Journal of Gynaecological Oncology},
  volume={24},
  number={2},
  pages={113--116},
  doi = {10.12892/ejgo200302113},
  year={2003}
}