@article{l. mariani2006against,
  title={Vaccination against human genital papillomaviruses. More than a hypothesis},
  author={g. de palo,l. mariani},
  journal={European Journal of Gynaecological Oncology},
  volume={27},
  number={4},
  pages={337--344},
  doi = {10.12892/ejgo200604337},
  year={2006}
}