@article{w. sawicki2003value,
  title={The value of ultrasonography in preoperative assessment of selected prognostic factors in endometrial cancer},
  author={w. sawicki,b. spiewankiewicz,j. stelmachow,k. cendrowski},
  journal={European Journal of Gynaecological Oncology},
  volume={24},
  number={3-4},
  pages={293--298},
  doi = {10.12892/ejgo200303293},
  year={2003}
}