[1] Orebro University Hospital,Department of Orthopedic Surgery
[2] Orebro University,School of Medical Sciences
[3] Orebro University Hospital,Division of Trauma and Emergency Surgery, Department of Surgery
[4] Karolinska University Hospital,Department of Surgery
[5] Karolinska Institutet,Division of Surgery, CLINTEC
[6] Orebro University Hospital,Department of Surgery