[1] Reg Hosp Viborg, Dept Neurol, Spinal Cord Injury Ctr Western Denmark, Heibergs Alle 4, DK-8800 Viborg, Denmark
[2] Univ Copenhagen, Clin Spinal Cord Injuries, Rigshosp, Copenhagen, Denmark
[3] Univ Bergen, Dept Clin Med, Bergen, Norway
[4] UCL, Natl Hosp Neurol & Neurosurg, Auton Unit, London, England
[5] Hammel Neurorehabil & Res Ctr, Hammel, Denmark
[6] Aarhus Univ Hosp, Dept Neurol, Aarhus, Denmark
[7] Aarhus Univ, Dept Clin Med, Danish Pain Res Ctr, Aarhus, Denmark