TY - JOUR AU - Curtis Kate AU - Ivers R. AU - Dinh M. BT - Medical Journal of Australia. LA - eng M1 - 8 PY - 2013 SP - 415 EP - 7 T2 - Medical Journal of Australia. TI - The effectiveness of helmets in reducing head injuries and hospital treatment costs in Sydney, Australia. A multicentre study. VL - 198 ER -