@article{m. ozsoy2004efficacy,
  title={The efficacy of intravenous versus epidural tramadol with patient-controlled analgesia (PCA) in gynecologic cancer pain},
  author={l. yavuz,f. eroglu,m. ozsoy},
  journal={European Journal of Gynaecological Oncology},
  volume={25},
  number={2},
  pages={215--218},
  doi = {10.12892/ejgo200402215},
  year={2004}
}