[1] Univ Basel Hosp, Dept Hematol, CH-4031 Basel, Switzerland
[2] Ctr Invest Clin, Paris, France
[3] INSERM, UMR 679, Pitie Salpxetriere Grp, Paris, France
[4] Univ Hosp Bern, Dept Neurol, Inselspital Bern, CH-3010 Bern, Switzerland
[5] Univ Roma La Sapienza, Univ Hosp, Rome, Italy
[6] Rambam Med Ctr, Haifa, Israel
[7] St Vincents Hosp, Dept Hematol, Sydney, NSW 2010, Australia
[8] Southampton Univ Hosp Trust, Wessex Neurol Ctr, Southampton, Hants, England
[9] Univ Autonoma Barcelona, Hosp Santa Creu & St Pau, E-08193 Barcelona, Spain
[10] CIBERER, Barcelona, Spain
[11] Univ Hosp Vall Hebron, Inst Recerca, Barcelona, Spain
[12] Univ Southampton, Dept Haematol, Southampton, Hants, England
[13] Columbia Univ, Med Ctr, Dept Haematol, New York, NY USA
[14] Univ Sydney, Dept Neurogenet, Royal N Shore Hosp, Kolling Inst Med Res, Sydney, NSW 2006, Australia
[15] Santa Creu & San Pau, Dept Hematol, Barcelona, Spain
[16] Columbia Univ, Dept Neurol, Med Ctr, New York, NY USA