1. From the MS Center Amsterdam (J.Y.B., W.H.F., H.E.d.V., G.K.), Molecular Cell Biology and Immunology, Vrije Universiteit Amsterdam, Amsterdam Neuroscience, Amsterdam UMC, location VUmc; Leiden University Medical Centre (LUMC) (J.Y.B., M.H., M.A.G.), Center of Proteomics and Metabolomics; MS Center Amsterdam (F.C.L., L.R.J.d.R., W.H.F., E.M.M.S., J.K., B.M.J.U.), Neurology, Vrije Universiteit Amsterdam, MS Center Amsterdam (M.M.T.E.E.G., C.T.), Neurochemistry Laboratory, Department of Clinical...