@article{adetifa2012,
  title={Pre-Vaccination Nasopharyngeal Pneumococcal Carriage in a Nigerian Population: Epidemiology and Population Biology},
  author={Ifedayo Adetifa and Martín Antonio and Christy A. N. Okoromah and Chinelo Ebruke and Victor Inem and David Nsekpong and Abdoulie Bojang and Richard A. Adegbola},
  year={2012},
  journal={PLoS ONE},
  doi={10.1371/journal.pone.0030548},
  url={https://doi.org/10.1371/journal.pone.0030548}
}