@article{jemal2011,
  title={Global cancer statistics},
  author={Ahmedin Jemal and Freddie Bray and Jacques Ferlay and Elizabeth Ward and David Forman},
  year={2011},
  journal={CA A Cancer Journal for Clinicians},
  doi={10.3322/caac.20107},
  url={https://doi.org/10.3322/caac.20107}
}