TY - JOUR AU - Ranstam, J. AU - Wagner, P. AU - Robertsson, O. AU - Lidgren, L. DO - doi:10.1302/0301-620X.90B12.21172 UR - https://doi.org/10.1302/0301-620X.90B12.21172 TI - Health-care quality registers T2 - The Journal of Bone & Joint Surgery British Volume VL - 90-B IS - 12 PY - 2008 SP - 1558 EP - 1561 ER -