@article{l.c. zeferino2008pap,
  title={Excessive pap smears due to opportunistic cervical cancer screening},
  author={r.a.p. freitas,g.a.f. carvasan,s.s. morais,l.c. zeferino},
  journal={European Journal of Gynaecological Oncology},
  volume={29},
  number={5},
  pages={479--482},
  doi = {10.12892/ejgo200805479},
  year={2008}
}