Department of Neurology, Maastricht University Medical Center, Maastricht, Netherlands. Department of Neurology, Curaçao Medical Center, Willemstad, Curaçao. Department of Neurology, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, Netherlands. Spaarne Gasthuis, Haarlem, Netherlands. Department of Medicine (Neurology), University Health Network, University of Toronto, Toronto, Canada. Institute for Research and Medical Consultations, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia. Department of Neurology, UKD and Center for Neurology and Neuropsychiatry, LVR Klinikum, Medical Faculty, Heinrich Heine University, Düsseldorf, Germany. Brain and Mind Centre, University of Sydney, Sydney, Australia. Medical University of Vienna, Vienna, Austria. Department of Neurology, Cedars-Sinai Medical Center, Los Angeles, CA, USA. Department of Neurology, Nagoya University Graduate School of Medicine, Nagoya, Japan. CSL Behring, Marburg, Germany. Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.