@article{a. markowska2004role,
  title={The role of leptin in breast cancer},
  author={a. markowska,k. malendowicz,k. drews},
  journal={European Journal of Gynaecological Oncology},
  volume={25},
  number={2},
  pages={192--194},
  doi = {10.12892/ejgo200402192},
  year={2004}
}