Multiple Sclerosis, Chronic ProgressiveMultiple SclerosisMultiple Sclerosis, Relapsing-RemittingMagnetic Resonance ImagingAtrophyDisease ProgressionBrainSpinal CordAcid Sensing Ion Channel BlockersRemission, SpontaneousMeningesDemyelinating DiseasesDisability EvaluationInterferon-betaRecurrenceAxonsOligoclonal BandsSclerosisStatistics, NonparametricSeverity of Illness IndexAmyotrophic Lateral SclerosisEncephalomyelitis, Autoimmune, ExperimentalTuberous Sclerosis