@misc{9336,
  author = {K. Donegan and B. King and P. Bryan},
  title = {Safety of pertussis vaccination in pregnant women in UK: observational study},
  year = {2014},
  journal = {Bmj},
  volume = {349},
  pages = {g4219},
  issn = {0959-8138},
  doi = {10.1136/bmj.g4219},
}