@article{m. takano2012serum,
  title={Normal serum CA125 half-life and normal serum nadir CA125 level in patients with ovarian cancers},
  author={t. yoshikawa,m. takano,t. kita,k. kudoh,n. sasaki,m. kato,a. watanabe,m. miyamoto,t. goto,k. furuya},
  journal={European Journal of Gynaecological Oncology},
  volume={33},
  number={3},
  pages={269--273},
  doi = {10.12892/ejgo201203269},
  year={2012}
}