[1] Ctr Gen Practice Aalborg Univ, Aalborg, Denmark
[2] Royal Brisbane & Womens Hosp, Kenneth Jamieson Dept Neurosurg G, Brisbane, Australia
[3] Univ Queensland, Sch Hlth & Rehabil Sci, Brisbane, Australia
[4] Gallipoli Med Res Fdn, Hlth Vet Res Program, Brisbane, Australia
[5] Aalborg Univ, Dept Hlth Sci & Technol, Aalborg, Denmark