Optic Nerve Demyelination in IgG4 Anti-Neurofascin 155 Antibody-Positive Combined Central and Peripheral Demyelination Syndrome - Verghese, Alice (Department of Neurology, Kuala Lumpur Hospital, Malaysia) ; Krishnan, Dhayalan (Department of Neurology, Kuala Lumpur Hospital, Malaysia) ; Chia, Yuen Kang (Department of Neurology, Queen Elizabeth Hospital, Malaysia) ; Querol, Luis (Universitat Autònoma de Barcelona. Departament de Medicina) ; Hiew, Fu Liong (Department of Neurology, Kuala Lumpur Hospital, Malaysia)