TY - JOUR AU - El-Metwally, A AU - StĚŠhl, M AU - Macfarlane, GJ AU - Mikkelsson, M AU - Jones, GT AU - Kaprio, J DO - doi:10.1302/0301-620X.91BSUPP_II.0910278e UR - https://doi.org/10.1302/0301-620X.91BSUPP_II.0910278e TI - GENETIC AND ENVIRONMENTAL INFLUENCES ON NON-SPECIFIC LOW BACK PAIN IN CHILDREN: A TWIN STUDY T2 - Orthopaedic Proceedings VL - 91-B IS - SUPP_II PY - 2009 SP - 278 EP - 279 ER -