[1] Univ Hosp North Norway, Dept Rehabil, N-9038 Tromso, Norway
[2] Arctic Univ Norway, Dept Clin Med, Fac Hlth Sci, Tromso, Norway
[3] Univ Basque Country UPV EHU, Dept Cell Biol & Histol, Leioa, Spain
[4] Oslo Univ Hosp, Dept Phys Med & Rehabil, Oslo, Norway
[5] Univ Oslo, Fac Med, Res Ctr Habilitat & Rehabil Models & Serv CHARM, Inst Hlth & Soc, Oslo, Norway
[6] Sunnaas Rehabil Hosp, Dept Res, Nesoddtangen, Norway
[7] Copenhagen Univ Hosp, Rigshosp, Dept Neurol, Copenhagen, Denmark
[8] Oslo Metropolitan Univ, Fac Hlth Sci, Oslo, Norway
[9] Biocruces Bizkaia Hlth Res Inst, Baracaldo, Spain
[10] Ikerbasque, Basque Fdn Sci, Bilbao, Spain
[11] Univ Hosp North Norway, Norwegian Ctr E Hlth Res, Tromso, Norway