@article{c. spyropoulos2011sentinel,
  title={Is sentinel node biopsy reliable in large breast tumors?},
  author={koukouras,c. spyropoulos,n. siasos,e.sdralis,e. tzorakoleftherakis},
  journal={European Journal of Gynaecological Oncology},
  volume={31},
  number={1},
  pages={80--82},
  doi = {10.12892/ejgo20100180},
  year={2011}
}