@article{27834,
  author = {Gomes G and Gordon S and Lalloo D},
  title = {Clinical trials: The mathematics of falling vaccine efficacy with rising disease incidence.},
  year = {2016},
  journal = {Vaccine},
  volume = {34},
  pages = {3007-3009},
  issn = {1873-2518},
  url = {http://www.sciencedirect.com/science/article/pii/S0264410X16302304},
  doi = {10.1016/j.vaccine.2016.04.065},
  language = {eng},
}