TY - CONF AU - Ferreira P. AU - Lam J. AU - Hopper J. AU - Maher C. AU - Ferreira Manuela BT - Australian Physiotherapy Association Conference CY - Brisbane, Australia DA - 229604465859 LA - eng PB - Proceedings of the Australian Physiotherapy Association Conference PP - Brisbane, Australia PY - 2011 EP - 29 T2 - Australian Physiotherapy Association Conference TI - Risk factors for low back pain among twins- a web-based population survey ER -