[1] Sun Yat Sen Univ, Dept Neurol, Multiple Sclerosis Ctr, Affiliated Hosp 3, Guangzhou 510275, Guangdong, Peoples R China
[2] Univ Western Australia, Ctr Neuromuscular & Neurol disorders, Perth, WA 6009, Australia
[3] Sir Charles Gairdner Hosp, Dept Neurol, Queen Elizabeth II Med Ctr, Perth, WA, Australia
[4] Neurointervent & Imaging Serv Western Australia, Perth, WA, Australia
[5] Murdoch Univ, Ctr Clin Immunol & Biomed Stat, Perth, WA, Australia
[6] Royal Perth Hosp, Dept Clin Immunol & Immunogenet, Perth, WA, Australia
[7] Univ Western Australia, Sch Pathol & Lab Med, Perth, WA 6009, Australia