@article{z.y. zhu2011of,
  title={Association of CYP1B1 gene polymorphisms and the positive expression of estrogen α and estrogen β with endometrial cancer risk},
  author={z.y. zhu,y.q. mu,x.m. fu,s.m. li,f.x. zhao},
  journal={European Journal of Gynaecological Oncology},
  volume={32},
  number={2},
  pages={188--191},
  doi = {10.12892/ejgo201102188},
  year={2011}
}