[1] Univ Hosp St Luc, Dept Neurol, Neuromuscular Reference Ctr, Brussels, Belgium
[2] Erasmus MC, Rotterdam, Netherlands
[3] Kings Coll Hosp London, London, England
[4] CEBAM, Cochrane Belgium, Leuven, Belgium
[5] Belgian Red Cross, CEBaP, Mechelen, Belgium
[6] CEBAM, Louvain, Belgium
[7] Univ Minnesota, Dept Neurol, Minneapolis, MN 55455 USA
[8] Timone Univ Hosp, Neuromuscular Referral Ctr ALS & Neuromuscular Di, Marseille, France
[9] GBS CIDP Fdn Int, Conshohocken, PA USA
[10] Johns Hopkins Sch Med, Baltimore, MD USA
[11] Univ Amsterdam, Dept Neurol, Amsterdam, Netherlands
[12] Univ Med Ctr Utrecht, Brain Ctr Rudolf Magnus, Utrecht, Netherlands
[13] Arhus Univ Hosp, Dept Neurol, Aarhus, Denmark
[14] Chiba Univ, Chiba, Japan
[15] Cedars Sinai Med Ctr, Los Angeles, CA 90048 USA
[16] Natl Hosp Neurol & Neurosurg, Ctr Neuromuscular Dis, Queen Sq, London, England
[17] Humanitas Clin & Res Hosp IRCCS, Milan, Italy
[18] Hosp Santa Creu & Sant Pau, Dept Neurol, Neuromuscular Dis Unit, Barcelona, Spain
[19] Queen Elizabeth Hosp Birmingham, Reg Neuromuscular Serv, Neurol, Birmingham, W Midlands, England
[20] Univ Klinikum Wuerzburg, Neurol Klin, Wurzburg, Germany
[21] Yeditepe Univ, Dept Pediat, Istanbul, Turkey