@article{ap. chen2020of,
  title={Sequencing of SMAD4 somatic variation in patients with
serous ovarian cancer},
  author={ap. chen,hf. zhao,zx.ding,yy. qi,c. wang,jl. wang},
  journal={European Journal of Gynaecological Oncology},
  volume={41},
  number={1},
  pages={85--88},
  doi = {10.31083/j.ejgo.2020.01.4643},
  year={2020}
}