[1] Royal Victoria Hosp, Dept Neurol, Belfast BT12 6BA, Antrim, North Ireland
[2] Queens Univ Belfast, UKCRC Ctr Excellence Publ Hlth Res, Belfast BT7 1NN, Antrim, North Ireland
[3] Royal Melbourne Hosp, Dept Neurol, Parkville, Vic 3050, Australia
[4] Ulster Hosp, Belfast, Antrim, North Ireland
[5] Karadeniz Tech Univ, Trabzon, Turkey
[6] Univ Bari, I-70121 Bari, Italy
[7] Univ G DAnnunzio, Dept Neurosci & Imaging, MS Ctr, Chieti, Italy
[8] Univ Hosp, Seville, Spain
[9] Hop Notre Dame de Bon Secours, Montreal, PQ H2L 4K8, Canada
[10] Neuro Rive Sud, Quebec City, PQ, Canada
[11] Hotel Dieu Levis, Quebec City, PQ, Canada
[12] Hosp Univ Clin San Carlos, IdISSC, Madrid, Spain
[13] Orbis Med Ctr, Sittard, Netherlands
[14] Neurol Inst IRCCS Mondino, Pavia, Italy
[15] Osped Macerata, Macerata, Italy
[16] John Hunter Hosp, Sydney, NSW, Australia
[17] Brain & Mind Res Inst, Sydney, NSW, Australia
[18] Hosp Sao Joao, Oporto, Portugal
[19] Clin Univ St Luc, B-1200 Brussels, Belgium
[20] Univ Florence, Dept Neurol, I-50121 Florence, Italy
[21] Osped Riuniti Salerno, Salerno, Italy
[22] Flinders Med Ctr, Adelaide, SA, Australia
[23] Groen Hart Ziekenhuis, Gouda, Netherlands
[24] Hosp Italiano Buenos Aires, Buenos Aires, DF, Argentina
[25] Hosp Univ Virgen de Valme, Seville, Spain
[26] Multiple Sclerosis Ctr Kamillus Klin, Asbach, Germany
[27] INEBA, Buenos Aires, DF, Argentina
[28] Hosp Fernandez, Buenos Aires, DF, Argentina
[29] Ctr Internac Restaurac Neurol, Havana, Cuba
[30] Mater Dei Hosp, Msida, Malta
[31] NYU, Langone Med Ctr, New York, NY 10003 USA
[32] Hosp Especialidades Ctr Med La Raza, Ctr Med Nacl Siglo 21, Mexico City, DF, Mexico
[33] Geelong Hosp, Geelong, Vic, Australia
[34] McGill Univ, Jewish Gen Hosp, Montreal, PQ H3T 1E2, Canada
[35] Westmead Hosp, Westmead, NSW, Australia
[36] Clin Neurol Clin Ctr, Skopje, North Macedonia
[37] Queens Univ Belfast, Ctr Med Educ, Belfast BT7 1NN, Antrim, North Ireland
[38] Univ Melbourne, Melbourne Brain Ctr, Dept Med, Parkville, Vic 3050, Australia
[39] Monash Univ, Box Hill Hosp, Dept Neurol, Clayton, Vic 3800, Australia