@article{r. atmaca2004in,
  title={Changes in serum CA-125 levels after laparotomy?},
  author={r. atmaca,o. balat,m. cekmen,m.g. ugur,a.i. kutlar,f. aksoy},
  journal={European Journal of Gynaecological Oncology},
  volume={25},
  number={6},
  pages={733--734},
  doi = {10.12892/ejgo200406733},
  year={2004}
}