fampridine human 3 multiple sclerosis 3 4-Aminopyridine 2 Article 2 Female 2 Humans 2 Male 2 Multiple Sclerosis 2 controlled study 2 female 2 male 2 4-aminopyridine 1 Animals 1 Axons 1 Brain Injuries, Traumatic 1 C57BL mouse 1 Caucasian 1 Demyelination 1 Electrophysiology 1 Expanded Disability Status Scale 1 Food and Drug Administration 1 Health Services Accessibility 1 Health Systems Plans 1 Kv1.2 1 Medical Assistance 1 Mice 1 Mice, Inbred C57BL 1 Middle Aged 1 Pharmaceutical Services 1