[1] Univ Western Australia, Fac Hlth & Med Sci, Ctr Orthopaed Res, Nedlands, WA 6009, Australia
[2] Perron Inst Neurol & Translat Sci, Nedlands, WA 6009, Australia
[3] Sir Charles Gairdner Hosp, QEII Med Ctr, Dept Neurosurg, Nedlands, WA, Australia
[4] Univ Western Australia, Ctr Neuromuscular & Neurol Disorders, Nedlands, WA, Australia
[5] Johns Hopkins Univ, Sch Med, Dept Art Appl Med, Baltimore, MD USA
[6] Univ Western Australia, Pathwest Labs, Nedlands, WA, Australia
[7] Univ Western Australia, Fac Hlth & Med Sci, Nedlands, WA, Australia
[8] Shanghai Jiao Tong Univ, Peoples Hosp 6, Dept Orthopaed Surg, Shanghai, Peoples R China