@article{eman m osman2021between,
  title={Relationship between 17β estradiol (17βE) levels and Catechol -O- methyltransferase (COMT) levels in ovarian cancers},
  author={nour m el-etreby,nehal a el badawy,hoda a nour,eman m osman},
  journal={European Journal of Gynaecological Oncology},
  volume={42},
  number={4},
  pages={757--762},
  doi = {10.31083/j.ejgo4204114},
  year={2021}
}