@article{o. yangling2007imbalance,
  title={Genetic imbalance and human papillomavirus states in vulvar squamous cell carcinomas},
  author={o. yangling,z. shulang,c. rongli,l. bo,c. lili,w. xin},
  journal={European Journal of Gynaecological Oncology},
  volume={28},
  number={6},
  pages={442--446},
  doi = {10.12892/ejgo200706442},
  year={2007}
}