@article{rui zhang2020recurrent,
  title={Postmenopausal recurrent retrovaginal extramural gastrointestinal stromal tumor: a case report},
  author={guolin liu,rui zhang},
  journal={European Journal of Gynaecological Oncology},
  volume={41},
  number={3},
  pages={473--476},
  doi = {10.31083/j.ejgo.2020.03.5098},
  year={2020}
}