@article{shan wang2011germ,
  title={Ovarian germ cell tumors in children: a 20-year retrospective study in a single institution},
  author={chao yang,shan wang,chang-chun li,jun zhang,xiang-ru kong,jun ouyang},
  journal={European Journal of Gynaecological Oncology},
  volume={32},
  number={3},
  pages={289--292},
  doi = {10.12892/ejgo201103289},
  year={2011}
}