@article{20199,
  author = {Curtis Kate and Ivers R. and Dinh M.},
  title = {The effectiveness of helmets in reducing head injuries and hospital treatment costs in Sydney, Australia. A multicentre study.},
  year = {2013},
  journal = {Medical Journal of Australia.},
  volume = {198},
  number = {8},
  pages = {415-7 },
  language = {eng},
}